:root {
    --primary: #2d6a4f;
    --primary-light: #40916c;
    --primary-dark: #1b4332;
    --accent: #52b788;
    --bg: #f8faf9;
    --bg-dark: #1b4332;
    --text: #2d3436;
    --text-light: #636e72;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0,0,0,0.07);
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Navigation */
header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1100px;
    margin: 0 auto;
    padding: 15px 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: background 0.2s, color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    background: var(--accent);
    color: var(--white);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 16px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: var(--white);
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(82,183,136,0.4);
}

/* Stats */
.stats {
    padding: 60px 20px;
    background: var(--white);
}

.stats h2, .topics h2, .principles h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid #e8f5e9;
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Topics */
.topics { padding: 60px 20px; }

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.topic-card {
    display: block;
    background: var(--white);
    padding: 30px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid transparent;
}

.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1);
    border-color: var(--accent);
}

.topic-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.topic-card h3 {
    color: var(--primary);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.topic-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Principles */
.principles {
    padding: 60px 20px;
    background: var(--white);
}

.principles-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.principle {
    padding: 24px;
    border-left: 4px solid var(--accent);
    background: var(--bg);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.principle h3 {
    color: var(--primary);
    margin-bottom: 8px;
}

.principle p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Content pages */
.page-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: var(--white);
    padding: 50px 20px;
    text-align: center;
}

.page-header h1 { font-size: 2.2rem; margin-bottom: 10px; }
.page-header p { opacity: 0.9; max-width: 600px; margin: 0 auto; }

.content { padding: 50px 20px; }

.content-section {
    max-width: 900px;
    margin: 0 auto 40px;
}

.content-section h2 {
    color: var(--primary);
    margin-bottom: 16px;
    font-size: 1.5rem;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 8px;
}

.content-section p {
    margin-bottom: 14px;
    color: var(--text);
    line-height: 1.8;
}

.content-section ul, .content-section ol {
    margin: 14px 0 14px 24px;
    color: var(--text);
}

.content-section li { margin-bottom: 8px; line-height: 1.7; }

.info-box {
    background: #e8f5e9;
    border-left: 4px solid var(--accent);
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin: 20px 0;
}

.info-box h4 {
    color: var(--primary);
    margin-bottom: 8px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.9rem;
}

.data-table th, .data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

.data-table th {
    background: var(--primary);
    color: var(--white);
}

.data-table tr:hover { background: #f1f8e9; }

/* Action page */
.action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

.action-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}

.action-card h3 {
    color: var(--primary);
    margin-bottom: 12px;
}

.action-card ul { margin-left: 18px; }
.action-card li { margin-bottom: 6px; color: var(--text-light); }

/* Footer */
footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 30px 20px;
    text-align: center;
}

footer p { opacity: 0.8; margin-bottom: 6px; font-size: 0.9rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: var(--white); padding: 20px; box-shadow: var(--shadow); }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .stat-number { font-size: 1.8rem; }
}