:root {
    --main-blue: #004a99;
    --accent-orange: #f39800;
    --text-dark: #333;
    --bg-light: #f8f9fa;
}

body {
    font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: #fff;
    border-bottom: 2px solid var(--main-blue);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    margin: 0;
}

nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: bold;
    font-size: 0.9rem;
}


.btn-nav {
    background: var(--main-blue);
    color: #fff !important;
    padding: 8px 15px;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://images.unsplash.com/photo-1513364776144-60967b0f800f?q=80&w=1200') center/cover;
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin: 10px 0;
}

.hero h1 span {
    color: var(--accent-orange);
font-size : 8rem;
}

.btn-main {
    display: inline-block;
    background: var(--accent-orange);
    color: #fff;
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 50px;
    margin-top: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Sections */
.section { padding: 80px 0; }
.bg-light { background: var(--bg-light); }
.bg-dark { background: #222; color: #fff; }
.title { text-align: center; margin-bottom: 50px; font-size: 2rem; }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-top: 5px solid var(--main-blue);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.tech-box {
    border: 2px solid var(--main-blue);
    padding: 40px;
    border-radius: 8px;
}

.benefit-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.table-wrapper {
    overflow-x: auto;
    text-align: center;
}

/* Form */
.cta form {
    max-width: 600px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input, textarea {
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

.btn-submit {
    background: var(--main-blue);
    color: #fff;
    padding: 20px;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
}

.buttom-click{
    text-align : center;
}

footer {
    background: #111;
    color: #888;
    text-align: center;
    padding: 30px 0;
}

@media (max-width: 768px) {
    header nav { display: none; }
    .hero h1 { font-size: 2rem; }
}