:root {
    --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --ink: #1a1d21;
    --ink-secondary: #3d4550;
    --ink-muted: #6e7681;
    --ink-faint: #9ca3af;
    --surface: #ffffff;
    --surface-warm: #f9f8f6;
    --surface-accent: #f0eeeb;
    --accent: #1b6b5a;
    --accent-hover: #145849;
    --accent-faint: #e6f0ed;
    --rule: #e3e1dd;
    --rule-light: #eeedea;
    --max-w: 720px;
    --px: 2rem;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--sans); color: var(--ink); background: var(--surface); line-height: 1.7; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--px); }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; }
h2 { font-size: 1.75rem; color: var(--ink); margin-bottom: 1.25rem; line-height: 1.25; }
p { color: var(--ink-secondary); font-size: 1.0625rem; line-height: 1.75; }
a { color: var(--accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--accent-hover); }

/* Topbar */
.topbar { border-bottom: 1px solid var(--rule-light); padding: 1rem 0; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; }
.topbar-brand { font-family: var(--sans); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); }
.topbar-cta { font-size: 0.875rem; font-weight: 500; color: var(--accent); }

/* Hero */
.hero { padding: 5rem 0 4rem; border-bottom: 1px solid var(--rule-light); }
.hero h1 { font-size: 3rem; line-height: 1.1; color: var(--ink); margin-bottom: 1.5rem; max-width: 620px; }
.hero-sub { font-size: 1.125rem; color: var(--ink-secondary); margin-bottom: 1rem; max-width: 580px; line-height: 1.65; }
.hero-detail { font-size: 0.9375rem; color: var(--ink-muted); max-width: 520px; margin-bottom: 2rem; }
.hero-cta { display: inline-flex; align-items: center; gap: 0.375rem; font-weight: 500; font-size: 1rem; color: var(--accent); border-bottom: 1px solid var(--accent); padding-bottom: 2px; transition: all 0.15s ease; }
.hero-cta:hover { color: var(--accent-hover); border-color: var(--accent-hover); }

/* Stat banner — redesigned as grid */
.stat-banner { background: var(--accent); color: #fff; padding: 3rem 0; border-bottom: none; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-bottom: 1.5rem; }
.stat-item { text-align: center; }
.stat-number { font-family: var(--serif); font-size: 2.75rem; line-height: 1; display: block; margin-bottom: 0.375rem; color: #fff; }
.stat-label { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: rgba(255,255,255,0.75); }
.stat-supporting { font-size: 0.9375rem; color: rgba(255,255,255,0.8); text-align: center; max-width: 500px; margin: 0 auto; line-height: 1.6; }

/* Section utility */
.section { padding: 4.5rem 0; }
.section--bordered { border-bottom: 1px solid var(--rule-light); }
.section--warm { background: var(--surface-warm); }
.section-label { font-family: var(--sans); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.muted-text { color: var(--ink-muted); font-size: 0.9375rem; }

/* Email mockup */
.email-mockup-section { padding: 4.5rem 0; background: var(--surface-warm); border-top: 1px solid var(--rule-light); border-bottom: 1px solid var(--rule-light); }
.email-mockup-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; margin-top: 2rem; }
.email-mockup-text p { margin-bottom: 1rem; }
.email-mockup-frame { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.email-mockup-header { background: var(--surface-accent); padding: 0.75rem 1.25rem; border-bottom: 1px solid var(--rule); display: flex; flex-direction: column; gap: 0.25rem; }
.email-mockup-header .em-from, .email-mockup-header .em-to { font-size: 0.6875rem; color: var(--ink-faint); }
.email-mockup-header .em-subject { font-size: 0.8125rem; font-weight: 600; color: var(--ink); }
.email-mockup-body { padding: 1.25rem; }
.email-mockup-body .em-title { font-family: var(--sans); font-weight: 600; font-size: 0.8125rem; color: var(--ink); margin-bottom: 0.25rem; }
.email-mockup-body .em-summary { font-size: 0.6875rem; color: var(--ink-muted); margin-bottom: 1rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--rule-light); }
.email-mockup-body .em-entry { padding: 0.5rem 0; border-bottom: 1px solid var(--rule-light); }
.email-mockup-body .em-entry:last-child { border-bottom: none; }
.email-mockup-body .em-company { font-size: 0.75rem; font-weight: 600; color: var(--ink); }
.email-mockup-body .em-director { font-size: 0.6875rem; color: var(--ink-secondary); }
.email-mockup-body .em-trade { font-size: 0.6875rem; color: var(--ink-muted); }
.email-mockup-body .em-meta { font-size: 0.625rem; color: var(--ink-faint); margin-top: 0.125rem; }
.email-mockup-body .em-more { text-align: center; color: var(--ink-faint); font-size: 0.6875rem; padding: 0.75rem 0; border-bottom: none; }

/* Mid-page CTA */
.mid-cta { padding: 2.5rem 0; border-bottom: 1px solid var(--rule-light); background: var(--surface); }
.mid-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.mid-cta-text { font-size: 1.0625rem; color: var(--ink-secondary); margin: 0; flex: 1; }

/* Include grid — 2x2 cards */
.include-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-top: 1.5rem; }
.include-item { display: flex; gap: 0.875rem; padding: 1.25rem; border: 1px solid var(--rule); border-radius: 8px; background: var(--surface); }
.include-icon { color: var(--accent); font-weight: 700; font-size: 1.125rem; flex-shrink: 0; line-height: 1.4; }
.include-item strong { font-size: 0.9375rem; color: var(--ink); display: block; margin-bottom: 0.25rem; }
.include-item p { font-size: 0.8125rem; color: var(--ink-muted); line-height: 1.5; margin: 0; }

/* Use case list */
.use-case-list { list-style: none; margin: 1.5rem 0; }
.use-case-list li { padding: 0.75rem 0; padding-left: 1.5rem; position: relative; font-size: 1.0625rem; color: var(--ink-secondary); border-bottom: 1px solid var(--rule-light); }
.use-case-list li:last-child { border-bottom: none; }
.use-case-list li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 600; }

/* CIS callout */
.cis-callout { margin-top: 1.5rem; padding: 1.25rem 1.5rem; background: var(--accent-faint); border-left: 3px solid var(--accent); border-radius: 0 6px 6px 0; font-size: 0.9375rem; color: var(--ink-secondary); line-height: 1.65; }

/* Audience grid */
.audience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.5rem; }
.audience-card { padding: 1.25rem 1.5rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 6px; font-size: 0.9375rem; color: var(--ink-secondary); line-height: 1.5; }

/* Pricing */
.pricing-section { padding: 5rem 0; background: var(--surface-warm); border-top: 1px solid var(--rule-light); border-bottom: 1px solid var(--rule-light); }
.pricing-card { max-width: 520px; margin: 0 auto; text-align: center; }
.pricing-amount { font-family: var(--serif); font-size: 3rem; color: var(--ink); line-height: 1; margin-bottom: 0.5rem; }
.pricing-period { font-size: 1rem; color: var(--ink-muted); margin-bottom: 2rem; }
.pricing-details { list-style: none; margin-bottom: 2.5rem; }
.pricing-details li { padding: 0.5rem 0; font-size: 0.9375rem; color: var(--ink-secondary); }
.pricing-details li.highlight { color: var(--accent); font-weight: 500; }
.pricing-details li + li { border-top: 1px solid var(--rule-light); }

/* Buttons */
.btn-group { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; margin-bottom: 1.25rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 1rem 2.5rem; font-family: var(--sans); font-size: 1rem; font-weight: 600; border-radius: 6px; text-decoration: none; transition: all 0.2s ease; cursor: pointer; border: 2px solid transparent; min-width: 240px; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.pricing-footnote { font-size: 0.8125rem; color: var(--ink-faint); }

/* FAQ */
.faq-list { max-width: 600px; }
.faq-item { padding: 1.5rem 0; border-bottom: 1px solid var(--rule-light); }
.faq-item:first-child { padding-top: 0; }
.faq-item:last-child { border-bottom: none; }
.faq-q { font-family: var(--sans); font-weight: 600; font-size: 1rem; color: var(--ink); margin-bottom: 0.5rem; }
.faq-a { font-size: 0.9375rem; color: var(--ink-muted); line-height: 1.7; }

/* Footer */
.footer { border-top: 1px solid var(--rule); padding: 3rem 0; background: var(--surface); }
.footer-trust { font-size: 0.875rem; color: var(--ink-secondary); margin-bottom: 0.75rem; }
.footer-disclaimer { font-size: 0.8125rem; color: var(--ink-faint); margin-bottom: 1.5rem; line-height: 1.6; }
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.footer-links a { font-size: 0.8125rem; font-weight: 500; color: var(--ink-muted); }
.footer-links a:hover { color: var(--accent); }
.footer-copy { font-size: 0.75rem; color: var(--ink-faint); }

/* Legal pages */
.legal-page { padding: 3rem 0 5rem; }
.legal-page .back-link { display: inline-block; font-size: 0.875rem; font-weight: 500; color: var(--accent); margin-bottom: 2rem; }
.legal-page h1 { font-size: 2rem; margin-bottom: 2rem; }
.legal-page h2 { font-size: 1.25rem; margin-top: 2.5rem; margin-bottom: 0.75rem; }
.legal-page p { margin-bottom: 1rem; }

/* Responsive */
@media (max-width: 640px) {
    :root { --px: 1.25rem; }
    .hero { padding: 3rem 0 2.5rem; }
    .hero h1 { font-size: 2rem; }
    .stat-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .stat-number { font-size: 2.25rem; }
    h2 { font-size: 1.5rem; }
    .email-mockup-layout { grid-template-columns: 1fr; gap: 2rem; }
    .include-grid { grid-template-columns: 1fr; }
    .audience-grid { grid-template-columns: 1fr; }
    .mid-cta-inner { flex-direction: column; text-align: center; }
    .btn-group { flex-direction: column; }
    .btn { width: 100%; min-width: unset; }
    .pricing-amount { font-size: 2.25rem; }
    .section { padding: 3rem 0; }
    .email-mockup-section { padding: 3rem 0; }
    .pricing-section { padding: 3.5rem 0; }
}