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

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #f7fafa;
    color: #263238;
    line-height: 1.6;
}

a {
    text-decoration: none;
}

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

.topbar {
    background: #ffffff;
    border-bottom: 1px solid #e5eeee;
    position: sticky;
    top: 0;
    z-index: 99;
}

.nav {
    height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #1b3b42;
    font-size: 22px;
    font-weight: 800;
}

.logo-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #56c7d8;
    color: #ffffff;
    display: grid;
    place-items: center;
    font-size: 15px;
}

.menu {
    display: flex;
    gap: 24px;
}

    .menu a {
        color: #31484e;
        font-weight: 600;
    }

        .menu a:hover {
            color: #56c7d8;
        }

.call-btn {
    background: #56c7d8;
    color: #ffffff;
    padding: 12px 18px;
    border-radius: 30px;
    font-weight: 700;
}

.hero {
    padding: 90px 0;
    background: linear-gradient(135deg, #e9fbfd, #ffffff);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.3fr .7fr;
    gap: 40px;
    align-items: center;
}

.tag {
    display: inline-block;
    background: #dff7fa;
    color: #17899a;
    padding: 7px 14px;
    border-radius: 30px;
    font-weight: 700;
    margin-bottom: 15px;
}

h1 {
    font-size: 46px;
    line-height: 1.15;
    color: #17343b;
    margin-bottom: 18px;
}

h2 {
    font-size: 34px;
    color: #17343b;
    margin-bottom: 15px;
}

h3 {
    color: #17343b;
    margin-bottom: 10px;
}

.hero p {
    font-size: 18px;
    color: #52676d;
    max-width: 720px;
}

.hero-buttons {
    margin-top: 28px;
    display: flex;
    gap: 14px;
}

.btn {
    display: inline-block;
    padding: 13px 22px;
    border-radius: 30px;
    font-weight: 700;
}

    .btn.primary {
        background: #56c7d8;
        color: white;
    }

    .btn.light {
        background: white;
        color: #17343b;
        border: 1px solid #dce9ec;
    }

.hero-card,
.info-box,
.contact-info,
.contact-form,
.product-card {
    background: white;
    border: 1px solid #e3eeee;
    border-radius: 22px;
    padding: 28px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, .05);
}

    .hero-card ul,
    .info-box ul {
        list-style: none;
    }

    .hero-card li,
    .info-box li {
        padding: 10px 0;
        border-bottom: 1px solid #edf4f5;
    }

.section {
    padding: 75px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

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

.product-card {
    transition: .25s;
}

    .product-card:hover {
        transform: translateY(-6px);
    }

.product-image {
    height: 180px;
    border-radius: 16px;
    background: #e9f7f9;
    color: #6ca7b0;
    display: grid;
    place-items: center;
    font-weight: 700;
    margin-bottom: 18px;
    border: 1px dashed #97d8e1;
}

.cta {
    background: #17343b;
    color: white;
    text-align: center;
    padding: 65px 0;
}

    .cta h2 {
        color: white;
    }

    .cta p {
        margin-bottom: 24px;
        color: #d4e5e8;
    }

.page-hero {
    background: linear-gradient(135deg, #e9fbfd, #ffffff);
    padding: 70px 0;
    text-align: center;
}

    .page-hero p {
        color: #5c7076;
    }

.about-grid,
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.gallery-item {
    height: 180px;
    border-radius: 18px;
    background: #e9f7f9;
    border: 1px dashed #97d8e1;
    color: #6ca7b0;
    display: grid;
    place-items: center;
    font-weight: 700;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

    .contact-form input,
    .contact-form textarea {
        border: 1px solid #dbe8eb;
        border-radius: 12px;
        padding: 14px;
        font-size: 15px;
        outline: none;
    }

    .contact-form button {
        border: none;
        background: #56c7d8;
        color: white;
        padding: 14px;
        border-radius: 30px;
        font-weight: 800;
        cursor: pointer;
    }

.alert-success {
    background: #e5fff1;
    color: #16804b;
    padding: 12px;
    border-radius: 12px;
    font-weight: 700;
}

.footer {
    background: #102a30;
    color: #d8e8eb;
    padding: 45px 0;
}

    .footer h3,
    .footer h4 {
        color: white;
    }

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: 28px;
}

@media (max-width: 900px) {
    .nav {
        height: auto;
        padding: 18px 0;
        flex-direction: column;
    }

    .menu {
        flex-wrap: wrap;
        justify-content: center;
    }

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

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

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

    h1 {
        font-size: 34px;
    }
}

@media (max-width: 560px) {
    .product-grid,
    .gallery-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .call-btn {
        width: 100%;
        text-align: center;
    }
}