:root {
    --bg-main: #050b16;
    --bg-card: #0b1424;
    --bg-card-hover: #111f35;

    --accent: #00aeef;
    --accent-light: #58cfff;

    --text-main: #ffffff;
    --text-muted: #9eb3c9;

    --border-color: rgba(255,255,255,.08);

    --shadow-main: 0 0 30px rgba(0,174,239,.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-main);
    color: var(--text-main);
    font-family: "Segoe UI", sans-serif;
    overflow-x: hidden;
}

a {
    text-decoration: none;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    background: rgba(5,11,22,.85);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
}

.logo-title {
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-subtitle {
    color: var(--accent);
    font-size: .8rem;
}

.nav-link {
    color: white !important;
    opacity: .85;
}

.nav-link:hover {
    opacity: 1;
    color: var(--accent-light) !important;
}

.btn-primary {
    background: var(--accent);
    border: none;
}

.btn-primary:hover {
    background: #0094ca;
}

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

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 70% 40%,
        rgba(0,174,239,.15),
        transparent 40%);
    pointer-events: none;
}

.hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-top: 20px;
    margin-bottom: 30px;
}

.hero-image {
    width: 100%;
    max-width: 520px;
    filter: drop-shadow(0 0 30px rgba(0,174,239,.35));
}

.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.3rem;
    font-weight: 700;
    margin-bottom: 60px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    height: 100%;
    transition: .3s;
}

.service-card:hover {
    transform: translateY(-8px);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-main);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-muted);
}

.industry-card,
.case-card,
.advantage-card {
    background: var(--bg-card);
    border-radius: 18px;
    padding: 25px;
    border: 1px solid var(--border-color);
    height: 100%;
}

.about-box {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
}

.contact-form {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
}

.form-control {
    background: #0d1829;
    border: 1px solid var(--border-color);
    color: white;
}

.form-control:focus {
    background: #0d1829;
    color: white;
    border-color: var(--accent);
    box-shadow: none;
}

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

@media(max-width:991px) {

    .hero {
        text-align: center;
        padding-top: 60px;
    }

    .hero-title {
        font-size: 2.4rem;
    }

    .hero-image {
        margin-top: 40px;
        max-width: 320px;
    }

}

@media(max-width:576px){

    .hero-title{
        font-size:2rem;
    }

    .section{
        padding:70px 0;
    }

}