:root {
    --color-primary: #0047AB;
    --color-primary-dark: #003D99;
    --color-primary-light: #1E88E5;
    --color-secondary: #1B5E20;
    --color-accent: #4CAF50;
    --color-text-primary: #212121;
    --color-text-secondary: #616161;
    --color-text-light: #9E9E9E;
    --color-background: #FFFFFF;
    --color-background-light: #F5F7FA;
    --color-background-dark: #0A0E27;
    --color-border: #E0E0E0;
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-error: #F44336;
    --color-shadow: rgba(0, 0, 0, 0.1);
    --color-shadow-dark: rgba(0, 0, 0, 0.2);

    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 2px 4px var(--color-shadow);
    --shadow-md: 0 4px 8px var(--color-shadow);
    --shadow-lg: 0 8px 16px var(--color-shadow);
    --shadow-xl: 0 16px 32px var(--color-shadow);

    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --container-max-width: 1200px;
    --container-padding: var(--spacing-md);

    --nav-height: 72px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.header {
    position: relative;
    z-index: 1000;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--nav-height);
}

.nav__logo a {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
    transition: all var(--transition-fast);
}

.nav__logo a:hover {
    color: var(--color-primary-light);
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    align-items: center;
}

.nav__item {
    position: relative;
}

.nav__link {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__link:hover {
    color: var(--color-primary);
    background-color: var(--color-background-light);
}

.nav__link--cta {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
}

.nav__link--cta:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav__dropdown-icon {
    font-size: 0.6rem;
    transition: transform var(--transition-fast);
}

.nav__item--dropdown:hover .nav__dropdown-icon {
    transform: rotate(180deg);
}

.nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background-color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all var(--transition-fast);
    z-index: 1001;
    list-style: none;
}

.nav__item--dropdown:hover .nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav__dropdown-item {
    list-style: none;
}

.nav__dropdown-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav__dropdown-link:hover {
    background-color: var(--color-background-light);
    color: var(--color-primary);
    padding-left: calc(var(--spacing-md) + 4px);
}

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-text-primary);
    padding: var(--spacing-xs);
}

.hero {
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-light) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(76, 175, 80, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__title {
    font-family: var(--font-primary);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero__subtitle {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    display: block;
    margin-top: var(--spacing-xs);
}

.hero__description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin: var(--spacing-lg) 0 var(--spacing-xl);
}

.hero__cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__image {
    width: 100%;
    max-width: 500px;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 6rem;
    color: white;
}

.stats {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

.stat__number {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat__label {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.features {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-light);
}

.section__title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.feature {
    background-color: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.feature:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature__icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.75rem;
    color: white;
}

.feature__title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.feature__description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.capabilities {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.capabilities__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.capabilities__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.capability {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.capability__icon {
    font-size: 1.5rem;
    color: var(--color-success);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.capability__text h3 {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.capability__text p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.capabilities__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.capabilities__image {
    width: 100%;
    max-width: 500px;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.capabilities__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 6rem;
    color: white;
}

.products {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-light);
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.product-card {
    background-color: var(--color-background);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-card__image {
    height: 250px;
    overflow: hidden;
}

.product-card__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 4rem;
    color: white;
}

.product-card__content {
    padding: var(--spacing-md);
}

.product-card__title {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.product-card__description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn--primary {
    background-color: var(--color-primary);
    color: white;
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--center {
    display: flex;
    margin: 0 auto;
    justify-content: center;
}

.sustainability-preview {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background);
}

.sustainability-preview__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.sustainability-preview__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.sustainability-stat__number {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-success);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.sustainability-stat__label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.sustainability-preview__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.sustainability-preview__image {
    width: 100%;
    max-width: 500px;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.sustainability-preview__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-success) 0%, var(--color-accent) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 6rem;
    color: white;
}

.testimonials {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-background-light);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial {
    background-color: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.testimonial:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
}

.testimonial__text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial__author {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.testimonial__author-info h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.testimonial__author-title {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
    color: white;
}

.cta__title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta__description {
    font-size: 1.125rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn--primary {
    background-color: white;
    color: var(--color-primary);
}

.cta .btn--primary:hover {
    background-color: var(--color-background-light);
    transform: translateY(-2px);
}

.cta .btn--secondary {
    background-color: transparent;
    color: white;
    border-color: white;
}

.cta .btn--secondary:hover {
    background-color: white;
    color: var(--color-primary);
    transform: translateY(-2px);
}

.footer {
    background-color: var(--color-background-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__title {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer__description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-md);
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer__heading {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer__links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.footer__link:hover {
    color: white;
    padding-left: var(--spacing-xs);
}

.footer__contact {
    font-style: normal;
}

.footer__contact-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer__contact-item i {
    width: 20px;
    color: var(--color-accent);
    margin-top: 0.25rem;
}

.footer__bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer__copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 992px) {
    .hero__container,
    .capabilities__container,
    .sustainability-preview__container {
        grid-template-columns: 1fr;
    }

    .hero__visual {
        order: -1;
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1.25rem;
    }

    .section__title {
        font-size: 2rem;
    }

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .features__grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .products__grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

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

@media (max-width: 768px) {
    .nav__menu {
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: 0;
        box-shadow: var(--shadow-lg);
        transform: translateY(-20px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        overflow-y: auto;
        align-items: stretch;
        max-height: 80vh;
    }

    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__toggle {
        display: block;
    }

    .nav__dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        min-width: 100%;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
        background-color: var(--color-background-light);
        border-radius: var(--radius-sm);
    }

    .nav__item--dropdown.open .nav__dropdown {
        max-height: 500px;
    }

    .nav__dropdown-link {
        padding: var(--spacing-xs) var(--spacing-lg);
    }

    .nav__item--dropdown:hover .nav__dropdown {
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .nav__link {
        padding: var(--spacing-sm) var(--spacing-sm);
    }

    .hero {
        padding-top: var(--spacing-2xl);
        padding-bottom: var(--spacing-2xl);
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 1.125rem;
    }

    .hero__description {
        font-size: 1rem;
    }

    .hero__cta {
        flex-direction: column;
    }

    .hero__image {
        height: 300px;
    }

    .hero__placeholder {
        font-size: 4rem;
    }

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .stat__number {
        font-size: 2rem;
    }

    .stat__label {
        font-size: 0.875rem;
    }

    .features__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .products__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .capabilities__list {
        gap: var(--spacing-md);
    }

    .capabilities__image {
        height: 300px;
    }

    .sustainability-preview__stats {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .cta__buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: var(--spacing-sm);
    }

    .hero__title {
        font-size: 1.75rem;
    }

    .section__title {
        font-size: 1.75rem;
    }

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