:root {
    --green: #1f8a4c;
    --green-dark: #166238;
    --green-light: #e7f5ec;
    --ink: #10241a;
    --muted: #5b6b62;
    --bg: #ffffff;
    --bg-alt: #f6f9f7;
    --border: #e2e8e4;
    --radius: 12px;
    --max-width: 1140px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
}

h1, h2, h3 {
    line-height: 1.2;
    margin: 0 0 0.6em;
}

p { margin: 0 0 1em; }

a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--border);
    background: var(--bg);
    position: sticky;
    top: 0;
    z-index: 20;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    margin-right: auto;
}

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

.main-nav a {
    color: var(--ink);
    font-weight: 500;
}

.lang-switcher select {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px 10px;
    background: var(--bg-alt);
    font-size: 13px;
    cursor: pointer;
}

/* Hero */
.hero {
    background: linear-gradient(180deg, var(--green-light) 0%, var(--bg) 100%);
    padding: 72px 0;
}

.hero-inner { text-align: center; }

.hero h1 {
    font-size: clamp(28px, 4.5vw, 44px);
    max-width: 800px;
    margin: 0 auto 0.5em;
}

.hero-subtitle {
    max-width: 640px;
    margin: 0 auto 2em;
    color: var(--muted);
    font-size: 17px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
}

.btn-primary {
    background: var(--green);
    color: #fff;
}
.btn-primary:hover { background: var(--green-dark); text-decoration: none; }

.btn-secondary {
    background: var(--bg);
    color: var(--ink);
    border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--green); text-decoration: none; }

/* Sections */
section { padding: 56px 0; }

.features h2, .how-it-works h2, .news-block h2, .cta h2 {
    text-align: center;
    font-size: 28px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 32px;
}

.feature-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.feature-card h3 { font-size: 17px; }

/* How it works */
.steps {
    list-style: none;
    margin: 32px auto 0;
    padding: 0;
    max-width: 720px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.steps li {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.step-number {
    flex: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--green);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.steps h3 { font-size: 16px; margin-bottom: 0.3em; }
.steps p { color: var(--muted); margin: 0; }

/* News */
.news-block-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 8px;
}
.news-block-header h2 { text-align: left; margin: 0; }

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.news-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    background: var(--bg);
}

.news-card-image img,
.news-detail-image {
    width: 100%;
    border-radius: var(--radius);
    margin-bottom: 12px;
    display: block;
}

.news-date {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
}

.news-card h2, .news-card h3 { font-size: 17px; margin-bottom: 6px; }

.news-detail h1 { font-size: 30px; }
.news-back { margin-bottom: 12px; }

/* CTA */
.cta {
    background: var(--green-light);
    border-radius: var(--radius);
    text-align: center;
    margin: 0 24px;
}
.cta p { color: var(--muted); }

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    padding: 32px 0;
    margin-top: 40px;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
}

.footer-brand {
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 4px;
}

@media (max-width: 640px) {
    .header-inner { flex-wrap: wrap; }
    .main-nav ul { gap: 14px; }
}