/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --blue: #2563eb;
    --blue-dark: #1d4ed8;
    --blue-light: #dbeafe;
    --navy: #0f172a;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --white: #ffffff;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08), 0 4px 10px rgba(0,0,0,0.04);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-700);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3, h4 { color: var(--gray-900); line-height: 1.2; }
a { color: inherit; text-decoration: none; }

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}
.logo span { color: var(--blue); }

.nav-cta {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--blue);
    padding: 8px 20px;
    border: 2px solid var(--blue);
    border-radius: 8px;
    transition: all 0.2s;
}
.nav-cta:hover {
    background: var(--blue);
    color: var(--white);
}

/* Buttons */
.btn {
    display: inline-block;
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 32px;
    border-radius: 10px;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--blue);
    color: var(--white);
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: var(--shadow-lg); }

.btn-ghost {
    background: transparent;
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}
.btn-ghost:hover { border-color: var(--gray-400); }

.btn-full { width: 100%; text-align: center; }
.btn-lg { font-size: 1.1rem; padding: 16px 40px; }

/* Hero */
.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
}

.hero-badge {
    display: inline-block;
    background: var(--blue-light);
    color: var(--blue);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--gray-50);
}

.section h2 {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-sub {
    text-align: center;
    color: var(--gray-500);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

/* Cards grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* Steps */
.steps {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.step-num {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--blue);
    color: var(--white);
    font-weight: 700;
    font-size: 1.2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-body h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.step-body p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* Features grid */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* FAQ */
.faq-list {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--gray-900);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--gray-400);
    font-weight: 400;
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '\2212';
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item p {
    padding: 0 24px 20px;
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Pricing */
.pricing-cards {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 700px;
    margin: 0 auto;
}

.price-card {
    flex: 1;
    min-width: 280px;
    max-width: 330px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 36px 32px;
    box-shadow: var(--shadow);
    position: relative;
}

.price-card-pop {
    border-color: var(--blue);
    box-shadow: 0 0 0 1px var(--blue), var(--shadow-lg);
}

.price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--blue);
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 100px;
    white-space: nowrap;
}

.price-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.price-amount {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.price-amount span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-400);
}

.price-features {
    list-style: none;
    margin-bottom: 28px;
}

.price-features li {
    padding: 8px 0;
    font-size: 0.93rem;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}

.price-features li:last-child { border: none; }

.price-features li::before {
    content: '\2713';
    color: var(--blue);
    font-weight: 700;
    margin-right: 10px;
}

/* CTA section */
.section-cta {
    background: var(--navy);
    text-align: center;
    padding: 80px 0;
}

.section-cta h2 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 12px;
}

.section-cta p {
    color: var(--gray-400);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 60px 0 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo { color: var(--white); }
.footer-brand p {
    margin-top: 8px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-links h4 {
    color: var(--white);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.footer-links a {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-400);
    margin-bottom: 8px;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    font-size: 0.83rem;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero { padding: 130px 0 70px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-sub { font-size: 1rem; }
    .hero-sub br { display: none; }
    .section { padding: 70px 0; }
    .section h2 { font-size: 1.6rem; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .footer-links { gap: 32px; }
    .pricing-cards { flex-direction: column; align-items: center; }
}