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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #20242b;
    background: #ffffff;
    line-height: 1.6;
}

.container {
    width: min(1120px, 90%);
    margin: auto;
}

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(20, 24, 29, 0.98);
    box-shadow: 0 2px 18px rgba(0, 0, 0, 0.14);
}

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #ffffff;
    text-decoration: none;
    font-weight: 800;
    font-size: 22px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    background: #f4b400;
    color: #171b20;
    font-size: 14px;
    font-weight: 900;
    border-radius: 4px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
}

.nav a:hover {
    color: #f4b400;
}

.nav-btn {
    background: #f4b400;
    color: #171b20 !important;
    padding: 11px 18px;
    border-radius: 4px;
}

.menu-toggle,
.menu-icon {
    display: none;
}

.hero {
    min-height: 690px;
    display: flex;
    align-items: center;
    position: relative;
    color: #ffffff;
    overflow: hidden;
    background:
        linear-gradient(90deg, rgba(18, 22, 27, 0.96) 0%, rgba(18, 22, 27, 0.83) 46%, rgba(18, 22, 27, 0.35) 100%),
        linear-gradient(135deg, #565e65, #242a30 55%, #7f6540);
}

.hero::before,
.hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    background: rgba(255, 255, 255, 0.08);
}

.hero::before {
    right: 8%;
    width: 260px;
    height: 430px;
    clip-path: polygon(15% 20%, 100% 0, 100% 100%, 0 100%, 0 35%);
}

.hero::after {
    right: 27%;
    width: 170px;
    height: 300px;
    clip-path: polygon(0 15%, 75% 0, 100% 100%, 0 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.eyebrow,
.section-tag {
    color: #d99a00;
    font-weight: 800;
    letter-spacing: 2px;
    font-size: 13px;
    margin-bottom: 14px;
}

.hero h1 {
    max-width: 800px;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.05;
    margin-bottom: 22px;
}

.hero-text {
    max-width: 690px;
    color: #e2e4e7;
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

.btn {
    display: inline-block;
    padding: 14px 24px;
    text-decoration: none;
    font-weight: 800;
    border-radius: 4px;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 15px;
}

.btn-primary {
    background: #f4b400;
    color: #171b20;
    border-color: #f4b400;
}

.btn-primary:hover {
    background: #d99a00;
    border-color: #d99a00;
}

.btn-outline {
    color: #ffffff;
    border-color: #ffffff;
}

.btn-outline:hover {
    background: #ffffff;
    color: #171b20;
}

.hero-stats {
    display: flex;
    gap: 54px;
    margin-top: 58px;
}

.hero-stats div {
    display: flex;
    flex-direction: column;
}

.hero-stats strong {
    color: #f4b400;
    font-size: 30px;
}

.hero-stats span {
    color: #d4d8dc;
    font-size: 13px;
}

.section {
    padding: 95px 0;
}

.about-grid,
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.building-card {
    position: relative;
    height: 420px;
    overflow: hidden;
    background: linear-gradient(#dce1e4 0 58%, #8d8d86 58% 100%);
    border-radius: 6px;
}

.building {
    position: absolute;
    bottom: 65px;
    background: #565b60;
    box-shadow: inset -18px 0 rgba(0,0,0,.08);
}

.building::after {
    content: "";
    position: absolute;
    inset: 20px;
    background:
        repeating-linear-gradient(
            to bottom,
            transparent 0 32px,
            rgba(255,255,255,.25) 32px 42px
        );
}

.building-one {
    width: 130px;
    height: 235px;
    left: 55px;
}

.building-two {
    width: 150px;
    height: 310px;
    left: 170px;
}

.building-three {
    width: 115px;
    height: 185px;
    right: 34px;
}

.crane {
    position: absolute;
    left: 80px;
    top: 35px;
    width: 9px;
    height: 300px;
    background: #f4b400;
    z-index: 5;
}

.crane::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 250px;
    height: 8px;
    background: #f4b400;
}

.crane::after {
    content: "";
    position: absolute;
    top: 5px;
    left: 200px;
    width: 2px;
    height: 120px;
    background: #363b40;
}

.about-content h2,
.section-heading h2,
.why-us h2,
.contact-grid h2 {
    font-size: clamp(34px, 4vw, 48px);
    line-height: 1.15;
    margin-bottom: 20px;
}

.about-content p {
    margin-bottom: 17px;
    color: #5f6873;
}

.check-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 13px;
    margin: 28px 0;
    font-weight: 700;
}

.check-grid span::first-letter {
    color: #d99a00;
}

.text-link {
    color: #20242b;
    text-decoration: none;
    font-weight: 800;
}

.services-section,
.process-section {
    background: #f4f5f6;
}

.section-heading {
    max-width: 720px;
    margin: 0 auto 48px;
    text-align: center;
}

.section-heading p:last-child {
    color: #65707b;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #ffffff;
    padding: 34px 28px;
    border-bottom: 4px solid transparent;
    box-shadow: 0 10px 34px rgba(17, 22, 27, 0.07);
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    border-bottom-color: #f4b400;
}

.service-icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    background: #fff5cf;
    color: #c98c00;
    font-size: 28px;
    margin-bottom: 22px;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 21px;
}

.service-card p {
    color: #68727d;
}

.why-us {
    background: #1c2228;
    color: #ffffff;
    padding: 90px 0;
}

.why-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 80px;
    align-items: center;
}

.section-tag.light {
    color: #f4b400;
}

.why-list > div {
    display: flex;
    gap: 22px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,.14);
}

.why-list > div > span {
    color: #f4b400;
    font-size: 25px;
    font-weight: 900;
}

.why-list h3 {
    margin-bottom: 4px;
}

.why-list p {
    color: #bdc4ca;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.project-card {
    height: 390px;
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background-size: cover;
    background-position: center;
}

.project-a {
    background:
        linear-gradient(rgba(30,35,40,.08), rgba(30,35,40,.78)),
        linear-gradient(135deg, #cfc6b8, #686f73);
}

.project-b {
    background:
        linear-gradient(rgba(30,35,40,.08), rgba(30,35,40,.78)),
        linear-gradient(135deg, #a8afb4, #424a50);
}

.project-c {
    background:
        linear-gradient(rgba(30,35,40,.08), rgba(30,35,40,.78)),
        linear-gradient(135deg, #c7bfb3, #5e5046);
}

.project-card::before {
    content: "";
    position: absolute;
    inset: 55px 55px 80px;
    border: 18px solid rgba(255,255,255,.24);
    border-bottom-width: 45px;
    transform: perspective(320px) rotateX(2deg);
}

.project-overlay {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 24px;
    z-index: 3;
    color: #ffffff;
}

.project-overlay span {
    color: #f4b400;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
}

.project-overlay h3 {
    font-size: 22px;
    margin-top: 5px;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.process-item {
    background: #ffffff;
    padding: 28px;
    position: relative;
}

.process-item > span {
    font-size: 42px;
    font-weight: 900;
    color: #efefef;
}

.process-item h3 {
    margin: 6px 0 9px;
}

.process-item p {
    color: #66717c;
}

.contact-section {
    background: #ffffff;
}

.contact-grid {
    align-items: start;
}

.contact-intro {
    color: #66717c;
    margin-bottom: 32px;
    max-width: 520px;
}

.contact-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}

.contact-details p {
    color: #68727d;
}

.contact-details strong {
    color: #20242b;
}

.contact-form-card {
    background: #f4f5f6;
    padding: 36px;
    border-top: 5px solid #f4b400;
}

.contact-form-card h3 {
    font-size: 26px;
    margin-bottom: 24px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

label {
    font-weight: 700;
    font-size: 14px;
    margin-top: 6px;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid #d4d8dc;
    background: #ffffff;
    padding: 13px 14px;
    font: inherit;
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #d99a00;
}

textarea {
    resize: vertical;
}

.form-btn {
    width: 100%;
    margin-top: 10px;
}

.form-message {
    margin-bottom: 18px;
    padding: 12px 14px;
    font-weight: 700;
    font-size: 14px;
}

.form-message.success {
    background: #e9f7ec;
    color: #1b6c2b;
    border-left: 4px solid #1f883d;
}

.form-message.error {
    background: #fff0f0;
    color: #a62727;
    border-left: 4px solid #d33c3c;
}

.footer {
    background: #151a1f;
    color: #d3d7db;
    padding-top: 65px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 50px;
}

.footer-logo {
    margin-bottom: 18px;
}

.footer-grid h4 {
    color: #ffffff;
    margin-bottom: 15px;
}

.footer-grid a {
    color: #d3d7db;
    display: block;
    text-decoration: none;
    margin: 7px 0;
}

.footer-grid p {
    margin: 7px 0;
}

.copyright {
    border-top: 1px solid #2b3239;
    text-align: center;
    padding: 20px;
    font-size: 13px;
    color: #939ca4;
}

@media (max-width: 900px) {
    .menu-icon {
        display: block;
        color: #ffffff;
        font-size: 28px;
        cursor: pointer;
    }

    .nav {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #151a1f;
        padding: 20px 5%;
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }

    .menu-toggle:checked ~ .nav {
        display: flex;
    }

    .about-grid,
    .contact-grid,
    .why-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .service-grid,
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-stats {
        gap: 28px;
        flex-wrap: wrap;
    }
}

@media (max-width: 620px) {
    .hero {
        min-height: 650px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .section {
        padding: 70px 0;
    }

    .service-grid,
    .project-grid,
    .process-grid,
    .footer-grid,
    .form-row,
    .contact-details,
    .check-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        height: 320px;
    }

    .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .contact-form-card {
        padding: 25px 20px;
    }
}