:root {
    --primary: #6DCFF6;
    --primary-hover: #5ABBE0;
    --slate-900: #0F172A;
    --slate-800: #1E293B;
    --slate-600: #475569;
    --slate-50: #F8FAFC;
    --white: #FFFFFF;
    --radius-lg: 24px;
    --shadow-soft: 0 10px 40px -10px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Plus Jakarta Sans', sans-serif; background-color: var(--white); color: var(--slate-900); -webkit-font-smoothing: antialiased; }

/* --- NAVIGATION --- */
nav { position: fixed; top: 0; width: 100%; z-index: 1000; background: rgba(255, 255, 255, 0.85); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(0,0,0,0.05); padding: 0.8rem 0; }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.logo-text { font-weight: 900; font-size: 1.8rem; color: var(--slate-900); text-decoration: none; letter-spacing: -0.05em; line-height: 1; display: flex; align-items: baseline; }
.logo-gradient { background: linear-gradient(to right, #6366F1, #22D3EE); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; color: transparent; }
.badge-lite { background: var(--slate-900); color: var(--white); font-size: 0.7rem; padding: 2px 8px; border-radius: 12px; margin-left: 6px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700; transform: translateY(-4px); display: inline-block; }
.nav-links a { color: var(--slate-600); text-decoration: none; font-weight: 600; margin-left: 2rem; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--slate-900); }
.btn-download { background: var(--slate-900); color: var(--white); padding: 0.75rem 1.5rem; border-radius: 100px; text-decoration: none; font-weight: 700; transition: all 0.3s ease; display: inline-flex; align-items: center; gap: 8px; }
.btn-download:hover { background: #000; transform: translateY(-2px); }

/* --- PAGE HEADER --- */
.page-header { padding: 10rem 0 4rem; background: radial-gradient(circle at 50% 0%, #F0F9FF 0%, var(--slate-50) 100%); text-align: center; }
.page-header h1 { font-size: 3rem; font-weight: 800; color: var(--slate-900); margin-bottom: 1rem; letter-spacing: -0.02em; }
.page-header p { font-size: 1.25rem; color: var(--slate-600); max-width: 600px; margin: 0 auto; line-height: 1.6; }

/* --- CONTENT --- */
.content-wrapper { max-width: 800px; margin: 0 auto; padding: 4rem 1.5rem; }
.content-wrapper h2 { font-size: 1.8rem; font-weight: 700; color: var(--slate-900); margin-top: 3rem; margin-bottom: 1rem; position: relative; display: inline-block; }
.content-wrapper h2::after { content: ''; display: block; width: 40px; height: 4px; background: var(--primary); border-radius: 2px; margin-top: 8px; }
.content-wrapper p { font-size: 1.1rem; color: var(--slate-600); line-height: 1.8; margin-bottom: 1.5rem; }
.content-wrapper ul { margin-bottom: 1.5rem; padding-left: 1.5rem; color: var(--slate-600); }
.content-wrapper li { margin-bottom: 0.5rem; font-size: 1.05rem; line-height: 1.7; }
.content-wrapper strong { color: var(--slate-900); font-weight: 700; }
.content-wrapper a { color: var(--primary-hover); text-decoration: none; font-weight: 600; }
.content-wrapper a:hover { text-decoration: underline; }

.tech-list { list-style: none; padding: 0; margin-top: 1.5rem; display: grid; gap: 1rem; }
.tech-item { background: var(--slate-50); padding: 1.5rem; border-radius: 16px; border: 1px solid rgba(0,0,0,0.03); display: flex; align-items: flex-start; gap: 1rem; }
.tech-icon { color: var(--primary); font-size: 24px; }
.version-badge { display: inline-block; background: var(--slate-900); color: white; padding: 4px 12px; border-radius: 100px; font-size: 0.9rem; font-weight: 700; margin-top: 2rem; }

/* --- FAQ SPECIFIC --- */
.faq-section h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 1.5rem; margin-top: 3rem; color: var(--slate-900); }
.faq-section h2:first-child { margin-top: 0; }
.faq-item { background: var(--slate-50); border-radius: 16px; padding: 2rem; margin-bottom: 1.5rem; border: 1px solid rgba(0,0,0,0.03); transition: transform 0.2s; }
.faq-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.05); }
.faq-question { font-weight: 700; font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--slate-900); }
.faq-answer { color: var(--slate-600); line-height: 1.6; }

/* --- FOOTER --- */
footer { background: var(--white); border-top: 1px solid rgba(0,0,0,0.05); padding: 4rem 0 2rem; }
.footer-container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 2rem; }
.footer-col h5 { font-weight: 700; margin-bottom: 1.2rem; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-col a { display: block; color: var(--slate-600); text-decoration: none; margin-bottom: 0.8rem; font-size: 0.95rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--primary-hover); }
.copyright { text-align: center; margin-top: 3rem; padding-top: 2rem; border-top: 1px solid rgba(0,0,0,0.05); color: var(--slate-600); font-size: 0.9rem; }

@media (max-width: 768px) { .nav-links { display: none; } .page-header h1 { font-size: 2.5rem; } }