:root {
    --sub-bg: #f9fafb;
    --sub-text: #1f2937;
    --sub-primary: #8b5cf6; /* Purple */
    --sub-secondary: #ec4899; /* Pink */
    --sub-card: #ffffff;
    --sub-border: #e5e7eb;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--sub-bg); color: var(--sub-text);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
}

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

/* Header */
.sub-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 24px 0; margin-bottom: 48px;
}
.sub-brand {
    font-size: 24px; font-weight: 800; color: var(--sub-primary);
    display: flex; align-items: center; gap: 8px;
}
.sub-brand::before { content: '💳'; font-size: 24px; }
.sub-nav { display: flex; gap: 24px; }
.sub-nav a {
    color: #4b5563; text-decoration: none; font-size: 15px; font-weight: 500;
    transition: color 0.2s;
}
.sub-nav a:hover, .sub-nav a.active { color: var(--sub-primary); }

/* Hero */
.sub-hero { text-align: center; margin-bottom: 64px; }
.sub-hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 16px; color: #111827;}
.sub-hero p { font-size: 18px; color: #6b7280; max-width: 600px; margin: 0 auto;}

/* Subscription Plans */
.sub-plans { margin-bottom: 80px; }
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; align-items: center;}
.plan-card {
    background: var(--sub-card); border: 1px solid var(--sub-border);
    border-radius: 16px; padding: 40px 32px; text-align: center;
    transition: transform 0.3s, box-shadow 0.3s; position: relative;
}
.plan-card:hover { transform: translateY(-8px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }
.plan-card.popular {
    border: 2px solid var(--sub-primary); box-shadow: 0 20px 25px -5px rgba(139, 92, 246, 0.1);
    transform: scale(1.05); z-index: 1;
}
.plan-card.popular:hover { transform: scale(1.05) translateY(-8px); }
.popular-badge {
    position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--sub-primary); color: #fff; padding: 4px 16px;
    border-radius: 9999px; font-size: 12px; font-weight: bold; text-transform: uppercase;
}

.plan-name { font-size: 20px; font-weight: 600; color: #374151; margin-bottom: 16px;}
.plan-price { font-size: 48px; font-weight: 800; color: #111827; margin-bottom: 8px;}
.plan-price span { font-size: 16px; font-weight: normal; color: #6b7280;}
.plan-desc { font-size: 14px; color: #6b7280; margin-bottom: 32px;}

.plan-features { list-style: none; text-align: left; margin-bottom: 32px;}
.plan-features li { margin-bottom: 12px; font-size: 15px; color: #4b5563; display: flex; align-items: center; gap: 8px;}
.plan-features li::before { content: '✓'; color: #10b981; font-weight: bold;}

.btn-plan {
    display: block; width: 100%; padding: 12px 0; font-size: 16px; font-weight: 600;
    color: var(--sub-primary); background: #f3f4f6; border-radius: 8px;
    text-decoration: none; transition: all 0.2s;
}
.plan-card.popular .btn-plan { background: var(--sub-primary); color: #fff; }
.btn-plan:hover { background: #e5e7eb; }
.plan-card.popular .btn-plan:hover { background: #7c3aed; }

/* FAQ */
.sub-faq { background: #fff; padding: 64px 0; border-top: 1px solid var(--sub-border);}
.sub-faq h2 { text-align: center; font-size: 30px; margin-bottom: 48px; color: #111827;}
.s-faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; max-width: 900px; margin: 0 auto;}
.s-faq-item { margin-bottom: 16px;}
.s-fq { font-weight: 600; font-size: 16px; color: #1f2937; margin-bottom: 8px;}
.s-fa { color: #6b7280; font-size: 15px;}

footer {
    text-align: center; padding: 32px 0; color: #9ca3af; font-size: 14px; background: #fff;
}

@media (max-width: 900px) {
    .plan-grid { grid-template-columns: 1fr; gap: 48px; max-width: 400px; margin: 0 auto;}
    .plan-card.popular { transform: none; }
    .plan-card.popular:hover { transform: translateY(-8px); }
    .s-faq-grid { grid-template-columns: 1fr; }
}