:root {
    --bg-color: #F9F9F7;
    /* Off-White / Alabaster */
    --text-color: #1A1A1A;
    /* Deep Charcoal */
    --accent-color: #2A4B7C;
    /* Muted Blueprint Blue - Example */
    --border-color: #1A1A1A;
    --font-main: 'Inter', sans-serif;
    --spacing-unit: 1rem;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 4rem;
    line-height: 1;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid var(--text-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 2px solid var(--text-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 100;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.nav-links a:hover {
    text-decoration: underline;
}

.btn-vendor {
    border: 2px solid var(--text-color);
    padding: 0.5rem 1rem;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

.btn-vendor:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* Hero Section */
.hero {
    padding: 8rem 0;
    border-bottom: 1px solid #ddd;
}

.hero-sub {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #444;
}

.hero-desc {
    font-size: 1.5rem;
    max-width: 800px;
    font-weight: 300;
}

/* About Section */
.about {
    padding: 6rem 0;
    border-bottom: 1px solid #ddd;
}

.about-header {
    text-align: center;
    margin-bottom: 3rem;
}

.meta {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    color: #555;
}

.about-body {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.25rem;
    line-height: 1.6;
}

/* Services Grid */
.services {
    padding: 6rem 0;
    border-bottom: 1px solid #ddd;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
}

.service-item {
    display: flex;
    flex-direction: column;
}

.service-content {
    margin-bottom: 1.5rem;
}

.service-visual {
    margin-top: auto;
    border: 1px solid #ccc;
    padding: 1rem;
    background-color: #fff;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tech-drawing {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    mix-blend-mode: multiply;
    /* Helps line drawings blend if they have white bg */
}

.placeholder-box {
    width: 100%;
    height: 100%;
    background-image: linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee),
        linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    opacity: 0.3;
}

/* Partners Section */
.partners {
    padding: 6rem 0;
    background-color: #EAEAE8;
    /* Slightly darker for distinction */
    border-bottom: 1px solid #ddd;
}

.partners h2 {
    margin-bottom: 2rem;
}

.partners p {
    max-width: 800px;
    margin-bottom: 2rem;
}

.cta-block {
    margin-top: 3rem;
    padding: 2rem;
    border: 2px solid var(--text-color);
    display: inline-block;
}

.btn-primary {
    display: inline-block;
    background-color: var(--text-color);
    color: var(--bg-color);
    padding: 1rem 2rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-top: 1rem;
    transition: opacity 0.2s;
}

.btn-primary:hover {
    opacity: 0.9;
}

/* Footer */
.footer {
    padding: 4rem 0;
    font-size: 0.9rem;
}

.footer-brand {
    font-weight: 800;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer address {
    font-style: normal;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.footer-contact p {
    margin-bottom: 0.5rem;
}

.copyright {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid #ddd;
    color: #666;
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .hero {
        padding: 4rem 0;
    }

    .about {
        padding: 4rem 0;
    }

    .services {
        padding: 4rem 0;
    }

    .partners {
        padding: 4rem 0;
    }
}