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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    color: #171717;
    line-height: 1.6;
}

img {
    max-width: 100%;
}


/* =========================
   NAVBAR
========================= */

.navbar {
    width: 100%;
    padding: 18px 7%;
    background: rgba(255, 255, 255, 0.97);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 18px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 25px;
    font-weight: 900;
    letter-spacing: 1px;
}

.logo span {
    font-weight: 400;
}

.menu {
    display: flex;
    gap: 30px;
}

.menu a {
    color: #222;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
    transition: 0.25s;
}

.menu a:hover {
    color: #d99b00;
}

.nav-button,
.main-button {
    display: inline-block;
    background: #d99b00;
    color: #111;
    text-decoration: none;
    padding: 13px 23px;
    border-radius: 7px;
    font-weight: 800;
    transition: 0.25s;
}

.nav-button:hover,
.main-button:hover {
    background: #f0b000;
    transform: translateY(-2px);
}


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

.hero {
    min-height: 680px;
    display: flex;
    align-items: center;
    padding: 90px 7%;
    position: relative;

    background:
        linear-gradient(
            90deg,
            rgba(0, 0, 0, 0.88),
            rgba(0, 0, 0, 0.55)
        ),
        url("images/1.jpeg") center center / cover no-repeat;

    color: white;
}

.hero-content {
    max-width: 800px;
}

.small-title {
    color: #e4a400;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(45px, 7vw, 82px);
    line-height: 1.02;
    margin-bottom: 25px;
    font-weight: 900;
}

.hero h1 span {
    display: block;
    color: #e4a400;
}

.hero-text {
    max-width: 650px;
    font-size: 20px;
    color: #eeeeee;
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.secondary-button {
    display: inline-block;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.85);
    padding: 13px 23px;
    border-radius: 7px;
    text-decoration: none;
    font-weight: 800;
    transition: 0.25s;
}

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


/* =========================
   GENERAL
========================= */

main {
    width: 100%;
}

section {
    padding: 100px 7%;
}

.section-title {
    text-align: center;
    margin-bottom: 55px;
}

.section-title p,
.section-label {
    color: #d99b00;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title h2 {
    font-size: clamp(35px, 5vw, 52px);
    line-height: 1.1;
}

.section-title span {
    display: block;
    width: 60px;
    height: 4px;
    background: #d99b00;
    margin: 20px auto 0;
}


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

.services {
    background: #ffffff;
}

.service-grid {
    max-width: 1150px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.service-card {
    padding: 40px;
    border: 1px solid #e5e5e5;
    border-radius: 12px;
    background: #fafafa;
    transition: 0.3s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.10);
    border-color: #e0b52b;
}

.service-number {
    color: #d99b00;
    font-size: 18px;
    font-weight: 900;
    margin-bottom: 18px;
}

.service-card h3 {
    font-size: 25px;
    margin-bottom: 12px;
}

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


/* =========================
   ABOUT
========================= */

.about {
    background: #171717;
    color: white;
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    max-width: 650px;
}

.about h2 {
    font-size: clamp(35px, 5vw, 58px);
    line-height: 1.08;
    margin-bottom: 25px;
}

.about-text > p:not(.section-label) {
    color: #cccccc;
    margin-bottom: 18px;
}

.about-text .main-button {
    margin-top: 20px;
}

.about-box {
    display: grid;
    gap: 20px;
}

.about-box div {
    border: 1px solid #444;
    padding: 25px;
    border-radius: 9px;
    background: rgba(255, 255, 255, 0.025);
    transition: 0.3s;
}

.about-box div:hover {
    border-color: #d99b00;
    transform: translateX(5px);
}

.about-box strong {
    color: #e4a400;
    font-size: 25px;
}

.about-box p {
    margin-top: 8px;
}


/* =========================
   PROJECTS / GALERÍA
========================= */

.projects {
    background: #f5f5f5;
}

.project-grid {
    max-width: 1150px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-placeholder {
    position: relative;
    overflow: hidden;
    border-radius: 14px;
    background: #dedede;
    aspect-ratio: 4 / 3;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.09);
}

.project-placeholder img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.project-placeholder:hover img {
    transform: scale(1.05);
}

.photo-note {
    text-align: center;
    color: #777;
    margin-top: 30px;
}


/* =========================
   CTA
========================= */

.cta {
    text-align: center;
    background: #e4a400;
    color: #111;
}

.cta p {
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.cta h2 {
    max-width: 750px;
    margin: auto auto 30px;
    font-size: clamp(38px, 6vw, 65px);
    line-height: 1.05;
}

.cta .main-button {
    background: #111;
    color: white;
}

.cta .main-button:hover {
    background: #333;
}


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

.contact {
    background: white;
}

.contact-grid {
    max-width: 1050px;
    margin: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 30px;
    margin-bottom: 25px;
}

.contact-info p {
    margin-bottom: 18px;
    color: #555;
}

.whatsapp-button {
    display: inline-block;
    margin-top: 15px;
    padding: 14px 25px;
    background: #25D366;
    color: white;
    text-decoration: none;
    border-radius: 7px;
    font-weight: 800;
    transition: 0.25s;
}

.whatsapp-button:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid #ddd;
    border-radius: 7px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #d99b00;
    box-shadow: 0 0 0 3px rgba(217, 155, 0, 0.10);
}

.contact-form textarea {
    resize: vertical;
}

.contact-form button {
    padding: 16px;
    border: none;
    border-radius: 7px;
    background: #111;
    color: white;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
    transition: 0.25s;
}

.contact-form button:hover {
    background: #333;
    transform: translateY(-2px);
}


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

footer {
    background: #111;
    color: white;
    text-align: center;
    padding: 45px 20px;
}

.footer-logo {
    font-size: 25px;
    font-weight: 900;
    margin-bottom: 10px;
}

footer p {
    color: #aaa;
}

.copyright {
    margin-top: 20px;
    font-size: 13px;
}


/* =========================
   FLOATING WHATSAPP
========================= */

.floating-whatsapp {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 999;
    background: #25D366;
    color: white;
    text-decoration: none;
    padding: 14px 20px;
    border-radius: 50px;
    font-weight: 800;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    transition: 0.25s;
}

.floating-whatsapp:hover {
    transform: translateY(-3px);
}


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

@media (max-width: 800px) {

    .navbar {
        padding: 16px 5%;
    }

    .menu {
        display: none;
    }

    .nav-button {
        padding: 10px 14px;
        font-size: 13px;
    }

    .logo {
        font-size: 21px;
    }

    .hero {
        min-height: 600px;
        padding: 70px 5%;
        background-position: center;
    }

    .hero h1 {
        font-size: clamp(42px, 13vw, 65px);
    }

    .hero-text {
        font-size: 18px;
    }

    section {
        padding: 70px 5%;
    }

    .service-grid,
    .about,
    .contact-grid,
    .project-grid {
        grid-template-columns: 1fr;
    }

    .about {
        gap: 40px;
    }

    .service-card {
        padding: 30px;
    }

    .project-grid {
        gap: 18px;
    }

    .project-placeholder {
        aspect-ratio: 4 / 3;
    }

    .floating-whatsapp {
        right: 15px;
        bottom: 15px;
        padding: 12px 17px;
    }
}
```