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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: #fafbfc;
    color: #232323;
    line-height: 1.7;
    min-height: 100vh;
    padding: 0 1rem;
}

/* Header */
header {
    padding: 2rem 0 1.5rem 0;
    background: #fff;
    border-bottom: 1px solid #ececec;
    text-align: center;
}

header h1 {
    font-size: 2.3rem;
    font-weight: 700;
    color: #0d47a1;
}

/* Footer */
footer {
    padding: 1rem 0;
    background: #f5f6fa;
    border-top: 1px solid #ececec;
    text-align: center;
    font-size: 0.9rem;
    color: #888;
    margin-top: 3rem;
}

/* Article და Section */
article, section {
    max-width: 720px;
    margin: 0 auto 2rem auto;
    background: #fff;
    border-radius: 6px;
    box-shadow: 0 1px 8px rgba(20, 40, 65, 0.06);
    padding: 2rem;
}

/* Heading Styles */
h1, h2, h3 {
    font-family: inherit;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #203354;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.4rem;
    margin-top: 2.5rem;
}

h3 {
    font-size: 1.15rem;
    margin-top: 2rem;
}

/* Body Content */
p + p {
    margin-top: 1.1rem;
}

ul {
    padding-left: 2rem;
    margin: 1rem 0;
}

ul li {
    margin-bottom: 0.5rem;
}

/* Strong tag */
strong {
    color: #0d47a1;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 900px) {
    article, section {
        max-width: 95vw;
        padding: 1.2rem;
    }
    header h1 {
        font-size: 1.55rem;
    }
}

@media (max-width: 500px) {
    header {
        padding: 1.1rem 0;
    }

    article, section {
        padding: 0.8rem;
        border-radius: 0;
        margin: 0.7rem 0;
    }
    h1 {
        font-size: 1.25rem;
    }
    h2 {
        font-size: 1.08rem;
    }
    h3 {
        font-size: 1rem;
    }
}


.main-nav {
    background: #f3f7fa;
    border-bottom: 1px solid #e0e5ea;
    padding: 0;
    margin-bottom: 25px;
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0 10px;
    display: flex;
    gap: 25px;
    align-items: center;
}

.main-nav li {
    margin: 0;
    padding: 0;
}

.main-nav a {
    display: block;
    padding: 18px 12px;
    color: #225274;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s, background 0.2s;
    border-radius: 4px;
    font-size: 1rem;
}

.main-nav a:hover,
.main-nav a:focus {
    color: #fff;
    background: #3477b0;
}

/* Responsive: Stack menu items vertically on small screens */
@media (max-width: 650px) {
    .main-nav ul {
        flex-direction: column;
        gap: 0;
        padding: 0;
    }
    .main-nav a {
        padding: 14px 16px;
        border-radius: 0;
        border-bottom: 1px solid #e0e5ea;
    }
}




.responsive-figure {
    max-width: 100%;
    margin: 1.5rem auto;
    text-align: center;
}

.responsive-figure img {
    width: 100%;
    height: auto;
    max-width: 600px;
    border-radius: 8px;
}

.responsive-figure figcaption {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    color: #555;
}

@media (max-width: 480px) {
    .responsive-figure figcaption {
        font-size: 0.85rem;
    }
}