* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body.dark {
    background: radial-gradient(circle at top, #1b2550 0, #050816 60%);
    color: #ffffff;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    min-height: 100vh;
}
a { color: inherit; }

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    background: rgba(5,8,22,0.96);
    position: sticky;
    top: 0;
    z-index: 10;
}
.logo {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.logo span {
    color: #00f0ff;
}
.nav a {
    margin-left: 20px;
    font-size: 0.9rem;
    text-decoration: none;
    opacity: 0.85;
}
.nav a:hover {
    opacity: 1;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
    gap: 40px;
    padding: 64px 10vw 48px;
}
@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
    }
}
.hero-text h1 {
    font-size: clamp(2.1rem, 4vw, 2.8rem);
    margin-bottom: 16px;
}
.hero-text p {
    max-width: 520px;
    opacity: 0.9;
    line-height: 1.6;
}
.hero-ctas {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .18s ease-out;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, #00f0ff, #6cffb8);
    color: #050816;
    box-shadow: 0 8px 24px rgba(0, 240, 255, 0.25);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgba(0, 240, 255, 0.35);
}
.btn-secondary {
    background: transparent;
    border-color: rgba(255,255,255,0.2);
    color: #ffffff;
}
.btn-secondary:hover {
    border-color: #00f0ff;
    background: rgba(0,240,255,0.05);
}

.hero-note {
    margin-top: 10px;
    font-size: 0.85rem;
    opacity: 0.8;
}

.hero-panel {
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-card {
    width: 100%;
    max-width: 420px;
    background: radial-gradient(circle at top left, rgba(0,240,255,0.2), rgba(5,8,22,0.98));
    border-radius: 18px;
    padding: 20px 22px;
    box-shadow: 0 18px 40px rgba(0,0,0,0.55);
    border: 1px solid rgba(255,255,255,0.08);
}
.hero-card h2 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}
.hero-card ul {
    list-style: none;
    margin-top: 8px;
}
.hero-card li {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 4px;
}
.hero-mini-buttons {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.mini-pill {
    font-size: 0.75rem;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(5,8,22,0.6);
    border: 1px solid rgba(255,255,255,0.26);
}

.features {
    padding: 24px 10vw 32px;
}
.features h2 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 1.6rem;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.feature-card {
    background: rgba(5,8,22,0.9);
    border-radius: 14px;
    padding: 18px 18px 20px;
    border: 1px solid rgba(255,255,255,0.06);
}
.feature-card h3 {
    margin-bottom: 8px;
    font-size: 1rem;
}
.feature-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.5;
}

.cta-strip {
    margin: 28px 10vw 40px;
    padding: 16px 22px;
    border-radius: 14px;
    background: linear-gradient(120deg, rgba(0,240,255,0.16), rgba(108,255,184,0.12));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.cta-strip p {
    font-size: 0.95rem;
}

.faq {
    padding: 0 10vw 40px;
}
.faq h2 {
    text-align: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
}
.faq-item {
    max-width: 720px;
    margin: 0 auto 14px;
}
.faq-item h3 {
    font-size: 1rem;
    margin-bottom: 4px;
}
.faq-item p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.pricing-main {
    padding: 32px 10vw 48px;
}
.pricing-hero {
    text-align: center;
    margin-bottom: 24px;
}
.pricing-hero h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
}
.pricing-hero p {
    opacity: 0.85;
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-top: 24px;
}
.plan-card {
    background: rgba(5,8,22,0.95);
    border-radius: 16px;
    padding: 20px 18px 24px;
    border: 1px solid rgba(255,255,255,0.06);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.plan-card.free { border-color: rgba(255,255,255,0.18); }
.plan-card.starter { border-color: rgba(0,240,255,0.38); }
.plan-card.pro,
.plan-card.crypto { border-color: rgba(108,255,184,0.42); }

.plan-card h2 {
    font-size: 1.1rem;
}
.plan-card .price {
    font-size: 1.7rem;
    font-weight: 700;
    margin: 4px 0;
}
.plan-card ul {
    list-style: none;
    font-size: 0.9rem;
    opacity: 0.92;
    line-height: 1.5;
    margin-bottom: 10px;
}
.plan-card li {
    margin-bottom: 4px;
}

.payment-info {
    margin-top: 28px;
    font-size: 0.9rem;
    opacity: 0.9;
}
.payment-info ul {
    list-style: disc;
    margin-left: 22px;
    margin-top: 6px;
}

.checkout-main {
    padding: 40px 10vw 48px;
    max-width: 720px;
    margin: 0 auto;
}
.checkout-main h1 {
    font-size: 1.6rem;
    margin-bottom: 8px;
}
.checkout-main p {
    margin-top: 8px;
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.95;
}
.pay-section {
    margin-top: 24px;
    padding: 16px 18px;
    border-radius: 14px;
    background: rgba(5,8,22,0.9);
    border: 1px solid rgba(255,255,255,0.08);
}
.wallet {
    margin-top: 10px;
    font-family: "SF Mono", "Roboto Mono", ui-monospace, Menlo, Monaco, Consolas;
    font-size: 0.9rem;
    word-break: break-all;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.12);
}
.email-highlight {
    margin-top: 10px;
    font-weight: 600;
}
.small {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: 8px;
}

.footer {
    padding: 16px 10vw 24px;
    border-top: 1px solid rgba(255,255,255,0.04);
    font-size: 0.8rem;
    opacity: 0.7;
    text-align: center;
    margin-top: 12px;
}