:root {
    --bg: #090d16;
    --surface: #131927;
    --surface-2: #0e1322;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f1f5f9;
    --muted: #94a3b8;
    --accent: #10b981;
    --accent-soft: rgba(16, 185, 129, 0.12);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Inter, sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

.wrap {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(9, 13, 22, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.02em;
    color: var(--text);
    text-decoration: none;
}

.lang {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3px;
}

.lang a {
    color: var(--muted);
    text-decoration: none;
    padding: 4px 9px;
    border-radius: 7px;
}

.lang a:hover { color: var(--text); }

.lang a[aria-current="true"] {
    background: var(--accent-soft);
    color: var(--accent);
}

.nav-right { display: flex; align-items: center; gap: 12px; }

.nav-links {
    display: flex;
    gap: 22px;
    font-size: 15px;
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
}

.nav-links a:hover { color: var(--text); }

.btn {
    display: inline-block;
    background: var(--accent);
    color: #04231a;
    font-weight: 700;
    text-decoration: none;
    padding: 13px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.25);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: none;
}

section { padding: 64px 0; border-top: 1px solid var(--border); }
section:first-of-type { border-top: none; }

h1 {
    font-size: clamp(30px, 5vw, 46px);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin: 0 0 18px;
}

h2 {
    font-size: clamp(22px, 3.5vw, 30px);
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}

h3 { font-size: 17px; margin: 0 0 8px; }

.lead {
    font-size: 18px;
    color: var(--muted);
    max-width: 640px;
    margin: 0 0 28px;
}

.accent { color: var(--accent); }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.sources {
    margin-top: 28px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.chip {
    background: var(--accent-soft);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent);
    border-radius: 20px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
}

.chip-soon {
    background: transparent;
    border-color: var(--border);
    color: var(--muted);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
    margin-top: 28px;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 22px;
}

.card p { color: var(--muted); margin: 0; font-size: 15px; }

.step-num {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 12px;
}

.plan-price {
    font-size: 30px;
    font-weight: 700;
    margin: 4px 0 14px;
}

.plan-price span { font-size: 15px; color: var(--muted); font-weight: 400; }

.plan ul { margin: 0; padding-left: 20px; color: var(--muted); font-size: 15px; }
.plan li { margin-bottom: 6px; }

.plan-pro { border-color: rgba(16, 185, 129, 0.4); }

.note { color: var(--muted); font-size: 14px; margin-top: 18px; }

.faq { margin-top: 24px; }

.faq details {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 18px;
    margin-bottom: 10px;
}

.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin: 10px 0 0; }

.en {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 22px;
    margin-top: 24px;
    color: var(--muted);
    font-size: 15px;
}

.en h2 { font-size: 20px; color: var(--text); }

footer {
    border-top: 1px solid var(--border);
    padding: 32px 0 48px;
    color: var(--muted);
    font-size: 14px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 14px;
}

@media (max-width: 640px) {
    .nav-links { display: none; }
    section { padding: 48px 0; }
    .nav .btn { padding: 10px 16px; font-size: 14px; }
}