:root{--bg:#ffffff;--text:#0f172a;--muted:#475569;--accent:#06b6d4;--primary:#0ea5e9;--surface:#f1f5f9;--border:#e2e8f0;--whatsapp:#25d366}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.container{width:min(1100px,92%);margin-inline:auto}.nav{position:sticky;top:0;-webkit-backdrop-filter:saturate(180%) blur(8px);backdrop-filter:saturate(180%) blur(8px);background:#ffffffd9;border-bottom:1px solid var(--border);z-index:40}.nav__content{display:flex;align-items:center;justify-content:space-between;padding:12px 0}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}.brand__logo{width:36px;height:36px}.brand__text{font-weight:700}.menu{display:flex;gap:18px;align-items:center}.menu a{color:var(--muted);text-decoration:none}.menu a:hover{color:var(--text)}.hero{padding:48px 0 24px}.hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:center}.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.1;margin:0 0 10px}.accent{color:var(--accent)}.hero p{color:var(--muted);margin:0 0 18px}.hero__cta{display:flex;gap:12px;margin:18px 0}.bullets{margin:16px 0 0;padding-left:18px;color:var(--muted)}.tooth3d{width:100%;aspect-ratio:1/1;border-radius:18px;background:linear-gradient(180deg,#fff,#fff)}.brands{padding:28px 0;background:var(--surface);border-block:1px solid var(--border)}.brands h2,.features h2,.catalog h2{font-size:24px;margin:0 0 16px}.brands__row{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;align-items:center}.brands__row img{max-width:100%;height:36px;object-fit:contain;filter:grayscale(1) brightness(.8);opacity:.8;transition:filter .6s ease,opacity .6s ease;position:relative}.brands__row img:hover{filter:grayscale(0) brightness(1);opacity:1;-webkit-mask-image:linear-gradient(90deg,#000 70%,#0000);mask-image:linear-gradient(90deg,#000 70%,#0000);-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-size:200% 100%;mask-size:200% 100%;animation:fillColor 1s forwards ease}@keyframes fillColor{0%{-webkit-mask-position:100% 0;mask-position:100% 0}to{-webkit-mask-position:0 0;mask-position:0 0}}.features{padding:40px 0}.features__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:18px;border:1px solid var(--border);border-radius:14px;background:#fff}.card h3{margin:0 0 6px;font-size:18px}.catalog{padding:40px 0}.catalog__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.item{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}.item img{width:100%;height:160px;object-fit:cover;display:block}.item h4{margin:10px 12px 4px}.item p{margin:0 12px 12px;color:var(--muted);font-size:14px}.center{display:flex;justify-content:center;margin-top:20px}.cta{padding:40px 0;background:var(--surface);border-top:1px solid var(--border)}.cta__box{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px;border:1px solid var(--border);border-radius:16px;background:#fff}.footer{padding:28px 0;border-top:1px solid var(--border);background:#fff}.footer__grid{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.footer__links{display:grid;gap:6px}.footer__links a{color:var(--muted);text-decoration:none}.footer__links a:hover{color:var(--text)}.btn{display:inline-block;padding:10px 14px;border-radius:10px;border:1px solid var(--border);text-decoration:none}.btn--primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn--primary:hover{filter:brightness(.95)}.btn--ghost{background:#fff}.btn--whatsapp{background:var(--whatsapp);border-color:var(--whatsapp);color:#fff}@media (max-width: 920px){.hero__grid{grid-template-columns:1fr;gap:14px}.brands__row{grid-template-columns:repeat(3,1fr)}.features__grid,.catalog__grid{grid-template-columns:1fr}.cta__box{flex-direction:column;align-items:stretch}}