:root {
    --bg-body: #1a1d27;
    --bg-card: #22262f;
    --bg-card-alt: #282d38;
    --border: #363c4a;
    --text: #ebedf2;
    --text-muted: #9198aa;
    --accent: #5b8af5;
    --accent-hover: #7ba2ff;
    --green: #34d87a;
    --red: #ef5350;
    --yellow: #f5cc3a;
    --radius: 10px;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #0f1117;
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* nav */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: var(--bg-body);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.nav-brand {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
}
.nav-brand span { color: var(--accent); }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { font-size: 14px; color: var(--text-muted); font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.btn-login {
    padding: 8px 20px;
    background: var(--accent);
    color: #fff !important;
    border-radius: 6px;
    font-weight: 600;
    font-size: 13px;
    transition: background .15s;
}
.btn-login:hover { background: var(--accent-hover); color: #fff !important; }

/* hero */
.hero {
    text-align: center;
    padding: 80px 24px 60px;
    max-width: 720px;
    margin: 0 auto;
}
.hero h1 {
    font-size: 44px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.hero h1 span { color: var(--accent); }
.hero p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 32px;
}
.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--accent);
    color: #fff;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: background .15s, transform .1s;
}
.hero-cta:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }

/* features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px 80px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
}
.feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    font-size: 20px;
}
.feature-icon.blue { background: rgba(91,138,245,.12); color: var(--accent); }
.feature-icon.green { background: rgba(52,216,122,.12); color: var(--green); }
.feature-icon.yellow { background: rgba(245,204,58,.12); color: var(--yellow); }
.feature-icon.red { background: rgba(239,83,80,.12); color: var(--red); }
.feature-card h3 {
    font-size: 16px;
    margin-bottom: 6px;
}
.feature-card p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

/* footer */
.footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding: 24px 32px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-body);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--text); }

/* legal pages */
.legal {
    max-width: 740px;
    margin: 0 auto;
    padding: 48px 24px 80px;
}
.legal h1 {
    font-size: 28px;
    margin-bottom: 8px;
}
.legal .updated {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 32px;
}
.legal h2 {
    font-size: 18px;
    margin-top: 32px;
    margin-bottom: 8px;
    color: var(--text);
}
.legal p, .legal li {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}
.legal ul { padding-left: 20px; margin: 8px 0 16px; }
.legal li { margin-bottom: 4px; }

/* responsive */
@media (max-width: 600px) {
    .nav { padding: 12px 16px; }
    .nav-links { gap: 14px; }
    .hero { padding: 48px 16px 40px; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 15px; }
    .features { padding: 0 16px 48px; }
    .footer { padding: 20px 16px; flex-direction: column; text-align: center; }
}