@font-face { font-family: 'Inter'; src: url('/fonts/inter-400.ttf') format('truetype'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/fonts/inter-500.ttf') format('truetype'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/fonts/inter-600.ttf') format('truetype'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Inter'; src: url('/fonts/inter-700.ttf') format('truetype'); font-weight: 700; font-display: swap; }

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --purple: #6C5CE7;
    --purple-dark: #5A4BD1;
    --purple-light: #A29BFE;
    --bg: #FAFAFA;
    --bg-card: #FFFFFF;
    --text: #1A1A2E;
    --text-muted: #6B7280;
    --border: #E5E7EB;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background: var(--bg);
}

/* ── Navigation ── */
header {
    position: sticky;
    top: 0;
    background: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
}

.logo span { color: var(--purple); }

.nav-btn {
    background: var(--purple);
    color: #fff;
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.nav-btn:hover { background: var(--purple-dark); }

/* ── Hero ── */
.hero {
    text-align: center;
    padding: 5rem 2rem 4rem;
    max-width: 720px;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    background: #EDE9FE;
    color: var(--purple);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 2rem;
}

.cta-btn {
    display: inline-block;
    background: var(--purple);
    color: #fff;
    padding: 0.9rem 2.5rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    transition: background 0.2s, transform 0.1s;
}

.cta-btn:hover { background: var(--purple-dark); transform: translateY(-1px); }

.version-note {
    margin-top: 0.8rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── Features ── */
.features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 2rem 4rem;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.8rem 1.5rem;
    text-align: center;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ── How It Works ── */
.how-it-works {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 4rem 2rem;
}

.how-it-works h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2.5rem;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.step { text-align: center; }

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--purple);
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.step h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ── Details ── */
.details {
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.detail h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.detail p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-brand p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
}

.footer-links a:hover { color: var(--purple); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.2rem; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: 1fr; gap: 1.5rem; }
    .details-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; gap: 1rem; text-align: center; }
}