*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --bg: #0f172a;
    --surface: #1e293b;
    --text: #f1f5f9;
    --accent: #3b82f6;
    --border: #334155;
}
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.btn { display: inline-flex; align-items: center; gap: .5rem; padding: .6rem 1.25rem; border-radius: 8px; font-weight: 500; font-size: 14px; cursor: pointer; border: none; transition: all .15s; font-family: inherit; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: .9; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--surface); }
img { max-width: 100%; height: auto; }
nav { background: var(--surface); border-bottom: 1px solid var(--border); padding: 1rem 0; position: sticky; top: 0; z-index: 100; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-size: 18px; font-weight: 700; color: var(--text); }
.nav-links { display: flex; gap: 1.5rem; align-items: center; }
.nav-links a { font-size: 14px; color: var(--text); opacity: .7; }
.nav-links a:hover { opacity: 1; text-decoration: none; }
.hero { padding: 6rem 0 4rem; text-align: center; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; line-height: 1.2; margin-bottom: 1.25rem; }
.hero p { font-size: 1.125rem; opacity: .7; max-width: 600px; margin: 0 auto 2rem; }
.hero-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-img { margin-top: 3rem; border-radius: 12px; border: 1px solid var(--border); overflow: hidden; }
.hero-img img { width: 100%; display: block; }
.features { padding: 5rem 0; }
.features h2 { font-size: 2rem; font-weight: 700; text-align: center; margin-bottom: 3rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.feature-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
.feature-icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: .5rem; }
.feature-card p { font-size: .9rem; opacity: .7; }
.cta { padding: 5rem 0; text-align: center; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cta h2 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
.cta p { opacity: .7; margin-bottom: 2rem; }
footer { padding: 2rem 0; border-top: 1px solid var(--border); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; font-size: 13px; opacity: .6; }
@media (max-width: 768px) {
    .nav-links { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; gap: .5rem; text-align: center; }
}