.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.03em}.brand-mark{width:42px;height:42px;border-radius:16px;background:linear-gradient(135deg,var(--primary),#11a36a);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:0 12px 28px rgba(52,199,89,.28)}.nav-links{display:flex;gap:24px;color:#475569;font-size:14px;font-weight:700}.nav-cta{display:flex;align-items:center;gap:12px}.card.dark-card{background:#101a2c;border-color:rgba(255,255,255,.1);color:#fff}.card.dark-card p{color:#cbd5e1}.stack-layout{display:grid;grid-template-columns:.93fr 1.07fr;gap:26px;align-items:start}@media (max-width:980px){.nav-links{display:none}}@media (max-width:640px){.nav-cta .btn.secondary{display:none}}