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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #1a2340;
    background-color: #f0f4ff;
}

/* Header */
header {
    background: linear-gradient(135deg, #1a237e 0%, #1565c0 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 12px rgba(21, 101, 192, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
}
nav ul li {
    margin: 0;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: background 0.3s;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

nav a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Main */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 20px;
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #e3eaff 0%, #bbcfff 100%);
    border-radius: 16px;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 20px rgba(26, 35, 126, 0.08);
}

.hero h1 {
    font-size: 2.6rem;
    color: #1a237e;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.15rem;
    color: #1565c0;
    max-width: 800px;
    margin: 0 auto;
}

/* Content sections */
.content-section {
    background: white;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(26, 35, 126, 0.06);
}

.content-section h2 {
    color: #1a237e;
    font-size: 1.8rem;
    margin-bottom: 1.1rem;
    border-left: 4px solid #1565c0;
    padding-left: 1rem;
}

.content-section h3 {
    color: #1565c0;
    font-size: 1.3rem;
    margin: 1.5rem 0 0.7rem 0;
}

.content-section p {
    margin-bottom: 1rem;
    text-align: justify;
    color: #2d3a5e;
}

blockquote {
    background-color: #e8eeff;
    border-left: 4px solid #1565c0;
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: #1a237e;
    border-radius: 6px;
}

ul {
    margin: 1rem 0 1rem 2rem;
    color: #2d3a5e;
}

ul li {
    margin-bottom: 0.6rem;
}

/* Methods grid */
.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.method-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(26, 35, 126, 0.07);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid #1565c0;
}

.method-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 28px rgba(26, 35, 126, 0.14);
}

.method-card h3 {
    color: #1a237e;
    margin-bottom: 0.9rem;
    font-size: 1.3rem;
}

.method-card p {
    color: #2d3a5e;
    line-height: 1.6;
}

/* Contact form */
.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(26, 35, 126, 0.07);
}

.contact-form h2 {
    color: #1a237e;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid #1565c0;
    padding-left: 1rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #1565c0;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #c5d3f7;
    border-radius: 7px;
    font-size: 1rem;
    transition: border-color 0.3s;
    font-family: inherit;
    color: #1a2340;
    background: #f7f9ff;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1565c0;
    background: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.submit-btn {
    background: linear-gradient(135deg, #1a237e 0%, #1565c0 100%);
    color: white;
    padding: 0.8rem 2.2rem;
    border: none;
    border-radius: 7px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 16px rgba(21, 101, 192, 0.35);
}

/* Contact info */
.contact-info {
    background: white;
    padding: 2rem 2.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(26, 35, 126, 0.06);
    margin-bottom: 2rem;
}

.contact-info h2 {
    color: #1a237e;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-left: 4px solid #1565c0;
    padding-left: 1rem;
}

.contact-info p {
    color: #2d3a5e;
    margin-bottom: 0.6rem;
}

.contact-info a {
    color: #1565c0;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background: linear-gradient(135deg, #1a237e 0%, #1565c0 100%);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

footer p {
    margin: 0;
    opacity: 0.9;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .content-section,
    .contact-info,
    .contact-form {
        padding: 1.5rem;
    }

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

    main {
        padding: 2rem 15px;
    }
}