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

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: #26364a;
    line-height: 1.7;
    background: #ffffff;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

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

a {
    text-decoration: none;
}

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

.header {
    background: #ffffff;
    padding: 18px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 15px rgba(0,0,0,0.06);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 25px;
}

.logo {
    font-size: 25px;
    font-weight: 800;
    color: #102d50;
    letter-spacing: -1px;
}

.logo span {
    color: #1685e5;
}

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

nav a {
    color: #33445a;
    font-size: 14px;
    font-weight: 600;
    transition: 0.3s;
}

nav a:hover {
    color: #1685e5;
}

.nav-button {
    background: #147fe0;
    color: white;
    padding: 11px 22px;
    border-radius: 6px;
}

.nav-button:hover {
    background: #075cae;
    color: white;
}

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

.hero {
    background: linear-gradient(120deg, #09294d, #1268b4);
    padding: 90px 0;
    color: white;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.eyebrow {
    color: #1685e5;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 2px;
    display: inline-block;
    margin-bottom: 15px;
}

.hero .eyebrow {
    color: #8dcaff;
}

.hero h1 {
    font-size: clamp(38px, 5vw, 58px);
    line-height: 1.15;
    margin-bottom: 25px;
}

.hero h1 span {
    color: #75c4ff;
}

.hero-text p {
    color: #d9eaff;
    font-size: 17px;
    max-width: 540px;
    margin-bottom: 32px;
}

.hero-image img {
    width: 100%;
    height: 390px;
    object-fit: contain;
    background: white;
    border-radius: 14px;
    padding: 15px;
}

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

.btn {
    display: inline-block;
    padding: 13px 25px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 14px;
    transition: 0.3s;
}

.btn-primary {
    background: #1685e5;
    color: white;
}

.btn-primary:hover {
    background: #0063bd;
    transform: translateY(-3px);
}

.btn-outline {
    border: 1px solid #ffffff;
    color: white;
}

.btn-outline:hover {
    background: white;
    color: #1268b4;
}

/* =========================
   INTRODUCTION
========================= */

.intro {
    padding: 65px 0;
    text-align: center;
    background: #f2f7fc;
}

.intro-inner {
    max-width: 850px;
}

.intro h2 {
    font-size: 30px;
    color: #102d50;
    margin-bottom: 15px;
}

.intro p {
    color: #64748b;
}

/* =========================
   PRODUCT SECTIONS
========================= */

.product-section {
    padding: 85px 0;
}

.alternate {
    background: #f3f7fc;
}

.section-heading {
    text-align: center;
    margin-bottom: 50px;
}

.section-heading h2 {
    font-size: 36px;
    color: #102d50;
    margin-bottom: 10px;
}

.section-heading p {
    color: #718096;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 55px;
    margin-bottom: 50px;
}

.product-image img {
    width: 100%;
    height: 390px;
    object-fit: contain;
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 10px 35px rgba(16,45,80,0.08);
}

.product-info h3 {
    font-size: 25px;
    color: #102d50;
    margin-bottom: 20px;
}

.product-info p {
    margin-bottom: 15px;
    color: #596b80;
}

.spec-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 45px;
}

.spec-card {
    text-align: center;
    background: #ffffff;
    border: 1px solid #e2eaf3;
    border-radius: 10px;
    padding: 25px 12px;
}

.spec-card span {
    font-size: 25px;
    font-weight: 800;
    color: #147fe0;
}

.spec-card p {
    font-size: 13px;
    color: #718096;
}

/* =========================
   DETAILS
========================= */

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.details-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    border: 1px solid #e1eaf3;
    box-shadow: 0 5px 20px rgba(16,45,80,0.04);
}

.details-card h3 {
    color: #102d50;
    font-size: 21px;
    margin-bottom: 20px;
}

.details-card ul {
    list-style: none;
}

.details-card li {
    position: relative;
    padding: 7px 0 7px 25px;
    color: #586b80;
    border-bottom: 1px solid #eef2f7;
}

.details-card li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1685e5;
    font-weight: bold;
}

.model {
    padding: 16px 0;
    border-bottom: 1px solid #e9eef4;
}

.model strong {
    color: #147fe0;
    font-size: 17px;
}

.model p {
    color: #64748b;
    margin-top: 5px;
}

/* =========================
   UNITY IMAGE GRID
========================= */

.feature-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 50px 0;
}

.feature-image-grid img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    background: white;
    padding: 12px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(16,45,80,0.08);
}

.feature-image-grid h4 {
    color: #102d50;
    font-size: 19px;
    margin: 15px 0 5px;
}

.feature-image-grid p {
    color: #64748b;
}

/* =========================
   APPLICATIONS
========================= */

.applications {
    padding: 85px 0;
    background: white;
}

.application-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.application-card {
    padding: 30px 22px;
    background: #f3f7fc;
    border-radius: 10px;
    border-bottom: 3px solid #1685e5;
    transition: 0.3s;
}

.application-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 25px rgba(16,45,80,0.09);
}

.application-card span {
    color: #1685e5;
    font-size: 27px;
    font-weight: 800;
}

.application-card h3 {
    color: #102d50;
    font-size: 18px;
    margin: 12px 0;
}

.application-card p {
    color: #718096;
    font-size: 14px;
}

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

.contact {
    background: linear-gradient(120deg, #09294d, #1268b4);
    padding: 85px 0;
    text-align: center;
    color: white;
}

.contact-inner {
    max-width: 750px;
}

.contact .eyebrow {
    color: #8dcaff;
}

.contact h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.contact p {
    color: #d9eaff;
    margin-bottom: 30px;
}

.btn-light {
    background: white;
    color: #1268b4;
}

.btn-light:hover {
    background: #dceeff;
    transform: translateY(-3px);
}

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

footer {
    padding: 30px 0;
    background: #071d35;
    color: white;
    text-align: center;
}

.footer-inner p {
    color: #a9bfd5;
    font-size: 13px;
}

.copyright {
    margin-top: 12px;
}

/* =========================
   RESPONSIVE DESIGN
========================= */

@media (max-width: 900px) {

    nav {
        gap: 14px;
    }

    nav a {
        font-size: 12px;
    }

    .hero-content {
        gap: 30px;
    }

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

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

@media (max-width: 650px) {

    .header {
        position: relative;
    }

    .nav {
        flex-direction: column;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px 18px;
    }

    .hero {
        padding: 55px 0;
    }

    .hero-content,
    .product-grid,
    .details-grid,
    .feature-image-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 39px;
    }

    .hero-image img {
        height: 280px;
    }

    .product-image img {
        height: 280px;
    }

    .section-heading h2 {
        font-size: 28px;
    }

    .product-section,
    .applications {
        padding: 60px 0;
    }

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

    .feature-image-grid img {
        height: 240px;
    }

    .contact h2 {
        font-size: 28px;
    }
}