.bav4 .ad-hero{padding:96px 0 64px;text-align:center}.bav4 .ad-hero h1{font-size:56px;margin:0 auto 16px;max-width:820px}.bav4 .ad-hero-sub{font-size:18px;color:var(--ink-soft);max-width:620px;margin:0 auto 12px;line-height:1.55}.bav4 .ad-hero-for{font-size:13px;color:var(--ink-faint);margin-bottom:32px;font-family:var(--font-geist-mono),ui-monospace,monospace;letter-spacing:.04em}.bav4 .ad-hero-ctas{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.bav4 .ad-hero-mockup{max-width:760px;margin:48px auto 0;padding:0 12px}@media (max-width:1100px){.bav4 .ad-hero h1{font-size:38px}}.bav4 .ad-section{padding:96px 0}.bav4 .ad-section--inset{background:var(--bg-subtle);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.bav4 .ad-section-head{text-align:center;margin-bottom:48px;max-width:720px;margin-left:auto;margin-right:auto}.bav4 .ad-section-head h2{font-size:36px;margin:0 auto 14px}.bav4 .ad-section-head p{font-size:15px;color:var(--ink-soft);line-height:1.55}@media (max-width:1100px){.bav4 .ad-section-head h2{font-size:28px}}.bav4 .ad-modules{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:16px}.bav4 .ad-module{background:var(--bg-card);border:1px solid var(--rule);padding:28px}.bav4 .ad-module-head{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:12px;margin-bottom:14px}.bav4 .ad-module h3{font-size:22px;font-weight:500;letter-spacing:-.02em;color:var(--ink);margin:0}.bav4 .ad-module-standard{font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:11px;font-weight:500;color:var(--accent);background:var(--accent-soft);padding:4px 12px;letter-spacing:.08em;text-transform:uppercase}.bav4 .ad-module-desc{font-size:15px;color:var(--ink-soft);line-height:1.6;margin-bottom:18px}.bav4 .ad-module-features{display:grid;grid-template-columns:repeat(2,1fr);gap:6px 16px;padding-top:16px;border-top:1px solid var(--rule)}.bav4 .ad-module-feat{font-size:13px;color:var(--ink-soft);display:flex;gap:8px;padding:3px 0}.bav4 .ad-module-feat .check{color:var(--accent);flex-shrink:0;font-weight:600}@media (max-width:640px){.bav4 .ad-module-features{grid-template-columns:1fr}}.bav4 .ad-standards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);max-width:1040px;margin:0 auto}.bav4 .ad-standard-card{background:var(--bg-card);padding:28px 24px}.bav4 .ad-standard-code{font-family:var(--font-geist-mono),ui-monospace,monospace;font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.08em;margin-bottom:8px}.bav4 .ad-standard-name{font-size:15px;font-weight:500;letter-spacing:-.01em;color:var(--ink);margin-bottom:8px}.bav4 .ad-standard-desc{font-size:13px;color:var(--ink-soft);line-height:1.55}@media (max-width:1100px){.bav4 .ad-standards{grid-template-columns:1fr 1fr}}@media (max-width:640px){.bav4 .ad-standards{grid-template-columns:1fr}}.bav4 .ad-integration{text-align:center;max-width:720px;margin:0 auto}.bav4 .ad-integration h2{font-size:24px;margin:0 0 16px}.bav4 .ad-integration p{font-size:15px;color:var(--ink-soft);line-height:1.6;margin-bottom:28px}.bav4 .ad-integration-links{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}.bav4 .ad-integration-link{font-size:14px;color:var(--ink);text-decoration:none;font-weight:500;letter-spacing:-.005em;border-bottom:1px solid var(--rule-strong);padding-bottom:2px;transition:border-color .15s ease}.bav4 .ad-integration-link:hover{border-bottom-color:var(--ink)}.bav4 .ad-final{text-align:center}.bav4 .ad-final-inner{max-width:620px;margin:0 auto;background:var(--accent-soft);border:1px solid var(--rule);padding:56px 32px}.bav4 .ad-final h2{font-size:30px;margin:0 auto 14px}.bav4 .ad-final p{font-size:15px;color:var(--ink-soft);margin:0 auto 28px;max-width:480px;line-height:1.55}.bav4 .ad-final-ctas{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}