/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #1a1a2e;
    background: #fafafa;
    line-height: 1.6;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.2; }
h2 { font-size: 2rem; text-align: center; margin-bottom: 16px; }
p { color: #444; }

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.12); }
.btn-primary { background: #2563eb; color: #fff; }
.btn-large { padding: 18px 48px; font-size: 1.15rem; }

/* === Hero === */
.hero {
    text-align: center;
    padding: 100px 24px 80px;
    background: linear-gradient(135deg, #e8f0fe 0%, #f0e6ff 100%);
}
.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: #2563eb;
    color: #fff;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}
.hero h1 { font-size: 3.5rem; margin-bottom: 16px; color: #1a1a2e; }
.hero-subtitle { font-size: 1.35rem; color: #333; margin-bottom: 12px; font-weight: 500; }
.hero-desc { font-size: 1.05rem; color: #555; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* === Features === */
.features { padding: 80px 24px; background: #fff; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
.feature-card {
    background: #f8f9fc;
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #eee;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.feature-icon { font-size: 2.5rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 8px; font-size: 1.15rem; }
.feature-card p { font-size: 0.95rem; color: #666; }

/* === How it works === */
.how-it-works { padding: 80px 24px; background: #f8f9fc; }
.steps { display: flex; align-items: center; justify-content: center; gap: 24px; margin-top: 40px; }
.step {
    text-align: center;
    flex: 1;
    max-width: 240px;
}
.step-number {
    width: 56px; height: 56px;
    background: #2563eb;
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 700;
    margin: 0 auto 16px;
}
.step h3 { margin-bottom: 8px; }
.step p { font-size: 0.95rem; color: #666; }
.step-arrow { font-size: 2rem; color: #2563eb; font-weight: 700; }

/* === Formulas === */
.formulas { padding: 80px 24px; background: #fff; }
.section-desc { text-align: center; color: #666; margin-bottom: 32px; }
.formulas-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}
.formula-tag {
    padding: 10px 20px;
    background: #e8f0fe;
    color: #2563eb;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
}

/* === Platforms === */
.platforms { padding: 80px 24px; background: #f8f9fc; }
.platforms-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-top: 32px;
}
.platform-card {
    padding: 16px 32px;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: border-color 0.2s;
}
.platform-card:hover { border-color: #2563eb; }

/* === Formats === */
.formats { padding: 60px 24px; background: #fff; }
.formats-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}
.format-badge {
    padding: 8px 16px;
    background: #f0f0f0;
    border-radius: 8px;
    font-size: 0.95rem;
}

/* === CTA === */
.cta {
    text-align: center;
    padding: 80px 24px;
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    color: #fff;
}
.cta h2 { color: #fff; }
.cta p { color: rgba(255,255,255,0.85); margin-bottom: 32px; font-size: 1.1rem; }
.cta .btn-primary { background: #fff; color: #2563eb; }

/* === Footer === */
footer {
    text-align: center;
    padding: 32px 24px;
    background: #1a1a2e;
    color: #888;
    font-size: 0.9rem;
}

/* === Mobile === */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .features-grid { grid-template-columns: 1fr; }
    .steps { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); }
}