:root {
    --bg: #0a0e1a;
    --card: #131825;
    --border: #1e2538;
    --text: #e4e8f1;
    --muted: #8891a5;
    --accent: #3b82f6;
    --green: #22c55e;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
}
nav .inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    height: 56px;
}
nav .logo { font-weight: 700; font-size: 1.1rem; color: var(--text); display: flex; align-items: center; gap: 0.5rem; }
nav .logo:hover { text-decoration: none; }
nav .logo img { width: 24px; height: 24px; border-radius: 6px; display: block; }
nav .links { display: flex; gap: 1.5rem; flex-wrap: wrap; }
nav .links a { color: var(--muted); font-size: 0.9rem; }
nav .links a:hover { color: var(--text); text-decoration: none; }

.hero {
    max-width: 1100px; margin: 0 auto;
    padding: 7rem 2rem 3rem;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.hero .badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.1);
    color: var(--green);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.3rem 0.8rem;
    border-radius: 100px;
    margin-bottom: 1.25rem;
}
.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.08;
    margin-bottom: 1rem;
}
.hero .subtitle {
    font-size: 1.1rem;
    color: var(--muted);
    margin-bottom: 1.75rem;
    max-width: 520px;
}
.cta {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: var(--accent);
    color: #fff;
    padding: 0.85rem 1.8rem;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    transition: opacity 0.2s;
}
.cta:hover { opacity: 0.9; text-decoration: none; }
.hero-image {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 0.5rem;
    overflow: hidden;
}
.hero-image img { border-radius: 12px; }

.content {
    max-width: 780px;
    margin: 0 auto;
    padding: 2rem 2rem 3rem;
}
.content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 0.8rem;
    letter-spacing: -0.01em;
}
.content p { color: var(--muted); margin-bottom: 1rem; font-size: 1.02rem; }
.content ul { color: var(--muted); margin: 0 0 1.2rem 1.5rem; }
.content ul li { margin-bottom: 0.4rem; }
.content strong { color: var(--text); }

.screenshot-block {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 0.5rem;
    margin: 1.5rem 0;
}
.screenshot-block img { border-radius: 10px; }

.faq { margin-top: 0.5rem; }
.faq details {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.9rem 1.2rem;
    margin-bottom: 0.6rem;
}
.faq summary {
    font-weight: 600;
    cursor: pointer;
    color: var(--text);
    font-size: 1rem;
    list-style: none;
}
.faq summary::marker { content: ''; }
.faq details[open] summary { margin-bottom: 0.6rem; }
.faq details p { color: var(--muted); margin: 0; }

.cta-block {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.08), rgba(59, 130, 246, 0.02));
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 14px;
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
}
.cta-block h2 { margin-top: 0; margin-bottom: 0.5rem; }
.cta-block p { margin-bottom: 1.2rem; }

footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
}
footer .links { display: flex; justify-content: center; gap: 1.3rem; margin-bottom: 0.8rem; flex-wrap: wrap; }

@media (max-width: 860px) {
    .hero { grid-template-columns: 1fr; padding: 6rem 1.5rem 2rem; gap: 2rem; }
    .hero h1 { font-size: 2.1rem; }
    .content { padding-left: 1.5rem; padding-right: 1.5rem; }
    .hero .subtitle { font-size: 1rem; }
    .hero-image { padding: 0.25rem; border-radius: 12px; }
    .hero-image video { border-radius: 10px; }
    nav { padding: 0 1rem; }
    nav .inner { height: 52px; }
    nav .links { gap: 0.9rem; }
    nav .links a { font-size: 0.85rem; }
    .faq summary { font-size: 0.95rem; }
    .content h2 { font-size: 1.35rem; margin-top: 2rem; }
    .cta-block { padding: 1.5rem 1.2rem; }
    footer .links { gap: 0.8rem 1rem; }
}

@media (max-width: 700px) {
    nav { padding: 0 1rem; }
    nav .links { gap: 0.5rem; flex-wrap: nowrap; }
    nav .links > a { display: none; }
}

@media (max-width: 520px) {
    .hero { padding: 5rem 1rem 1.5rem; }
    .hero h1 { font-size: 1.85rem; }
    .hero .cta { width: 100%; justify-content: center; padding: 0.9rem 1.4rem; }
    .quick-nav { padding: 0.5rem 1rem 2rem; }
    .quick-nav .grid { grid-template-columns: 1fr; }
    .content { padding: 1rem; }
    .faq details { padding: 0.75rem 0.9rem; }
    nav .links a:not(:first-child):not(:last-child) { display: none; }
    footer { padding: 1.5rem 1rem; }
}

/* Language picker */
.lang-picker { position: relative; font-size: 0.9rem; }
.lang-picker summary { cursor: pointer; color: var(--muted); list-style: none; padding: 0.3rem 0.5rem; border-radius: 6px; }
.lang-picker summary::-webkit-details-marker { display: none; }
.lang-picker summary::marker { content: ''; }
.lang-picker[open] summary { color: var(--text); background: var(--card); }
.lang-picker .lang-menu {
    position: absolute; top: 100%; right: 0; margin-top: 0.4rem;
    background: var(--card); border: 1px solid var(--border); border-radius: 10px;
    padding: 0.4rem; min-width: 160px;
    display: flex; flex-direction: column; gap: 0.1rem;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3); z-index: 110;
}
.lang-picker .lang-menu a { color: var(--text); padding: 0.5rem 0.7rem; border-radius: 6px; font-size: 0.9rem; }
.lang-picker .lang-menu a:hover { background: rgba(59,130,246,0.1); text-decoration: none; }