```css
/* =========================================
   RESET
========================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #171717;
    background: #ffffff;
    line-height: 1.6;
}

img {
    display: block;
    width: 100%;
}

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

button,
input,
textarea,
select {
    font: inherit;
}


/* =========================================
   GLOBAL
========================================= */

.container {
    width: min(1180px, 92%);
    margin: 0 auto;
}

.section {
    padding: 110px 0;
}

.eyebrow {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    margin-bottom: 18px;
    color: #777;
}

h1,
h2,
h3 {
    line-height: 1.1;
}

h2 {
    font-size: clamp(2.3rem, 5vw, 4rem);
    letter-spacing: -0.04em;
}

.section-heading {
    max-width: 650px;
    margin-bottom: 55px;
}

.section-heading > p:last-child {
    margin-top: 20px;
    color: #666;
}


/* =========================================
   HEADER
========================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(10px);
}

.nav {
    height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: white;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.logo span {
    color: #d7ff3f;
}

nav {
    display: flex;
    gap: 32px;
}

nav a {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    transition: opacity 0.2s ease;
}

nav a:hover {
    opacity: 0.65;
}

.menu-toggle {
    display: none;
    border: 0;
    background: transparent;
    color: white;
    font-size: 1.6rem;
    cursor: pointer;
}


/* =========================================
   HERO
========================================= */

.hero {
    min-height: 90vh;
    position: relative;
    display: flex;
    align-items: center;

    background:
        url("images/hero.jpg")
        center center / cover no-repeat;

    color: white;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.58);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-top: 76px;
    max-width: 900px;
}

.hero .eyebrow {
    color: #d7ff3f;
}

.hero h1 {
    font-size: clamp(3.3rem, 8vw, 7rem);
    letter-spacing: -0.06em;
    max-width: 900px;
}

.hero-text {
    max-width: 600px;
    margin-top: 28px;
    font-size: 1.15rem;
    color: #ddd;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    margin-top: 38px;
}


/* =========================================
   BUTTONS
========================================= */

.btn {
    display: inline-block;
    border: 1px solid transparent;
    padding: 15px 25px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s ease;
}

.btn-primary {
    background: #d7ff3f;
    color: #111;
}

.btn-primary:hover {
    background: white;
}

.btn-secondary {
    border-color: white;
    color: white;
}

.btn-secondary:hover {
    background: white;
    color: #111;
}


/* =========================================
   INTRO
========================================= */

.intro {
    padding: 100px 0;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: start;
}

.intro h2 {
    max-width: 600px;
}

.intro-grid > div:last-child {
    padding-top: 10px;
}

.intro-grid p {
    color: #555;
    font-size: 1.1rem;
}

.text-link {
    display: inline-block;
    margin-top: 25px;
    font-weight: 700;
    border-bottom: 2px solid #171717;
    padding-bottom: 4px;
}


/* =========================================
   SERVICES
========================================= */

.services {
    background: #f4f4f1;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    background: white;
    padding: 35px;
    min-height: 260px;
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;

    background: #171717;
    color: #d7ff3f;

    font-size: 0.75rem;
    font-weight: 800;

    margin-bottom: 28px;
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 14px;
}

.service-card p {
    color: #666;
}


/* =========================================
   DARK FEATURE SECTION
========================================= */

.dark-section {
    background: #111;
    color: white;
    padding: 90px 0;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.feature strong {
    color: #d7ff3f;
    font-size: 0.8rem;
}

.feature h3 {
    margin: 15px 0;
    font-size: 1.3rem;
}

.feature p {
    color: #999;
}


/* =========================================
   GALLERY
========================================= */

.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.gallery-item {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #eee;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.04);
}


/* =========================================
   CONTACT
========================================= */

.contact-section {
    background: #f4f4f1;
    padding: 110px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 100px;
}

.contact-grid > div:first-child > p:not(.eyebrow) {
    color: #666;
    margin-top: 25px;
    max-width: 500px;
}

.contact-details {
    margin-top: 45px;
}

.contact-details p {
    margin-bottom: 22px;
    color: #555;
}

.contact-details a {
    color: #111;
}

.contact-form {
    background: white;
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    border: 1px solid #ddd;
    padding: 13px 14px;
    background: white;
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #111;
}

.form-group textarea {
    resize: vertical;
}

.form-button {
    border: 0;
}


/* =========================================
   FOOTER
========================================= */

.footer {
    background: #111;
    color: white;
    padding: 55px 0 25px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 40px;
}

.footer p {
    color: #888;
    margin-top: 10px;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: #aaa;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    width: min(1180px, 92%);
    margin: 50px auto 0;
    padding-top: 20px;
    border-top: 1px solid #292929;
    color: #666;
    font-size: 0.8rem;
}


/* =========================================
   MOBILE
========================================= */

@media (max-width: 800px) {

    .menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #111;
        padding: 25px;
        flex-direction: column;
        gap: 20px;
    }

    nav.active {
        display: flex;
    }

    .hero {
        min-height: 80vh;
    }

    .hero h1 {
        font-size: clamp(3rem, 14vw, 5rem);
    }

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

    .intro-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

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

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

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

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        flex-wrap: wrap;
    }
}


@media (max-width: 500px) {

    .section,
    .contact-section {
        padding: 75px 0;
    }

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

    .contact-form {
        padding: 25px;
    }
}
```