:root{color-scheme:light;--header-offset: 72px;--space-base: 15px}*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Liberation Sans,"Apple Color Emoji","Segoe UI Emoji";color:#2a2f36;background:#fff}h1{font-size:2rem;margin:0 0 16px;color:#0b0d10}h2{font-size:1.5rem;margin:0 0 16px}h3{font-size:1.25rem;margin:0 0 16px}img{max-width:100%;display:block}a{color:#1e6bd7;text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:1100px;margin-inline:auto;padding:0 16px}[id]{scroll-margin-top:var(--header-offset)}.site-header{position:sticky;top:0;background:#fff;box-shadow:0 2px 8px #00000014;z-index:10}.top-nav{display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:12px;padding:12px 15px}.brand{font-weight:800;color:#134b8a;font-size:1.125rem}.lang-switch{display:flex;gap:4px}.lang-btn{border:1px solid #c7cfda;background:#fff;color:#2a2f36;padding:6px 8px;border-radius:8px;font-weight:600}.lang-btn.active{background:#1e6bd7;color:#fff;border-color:#1e6bd7}.menu-toggle{display:none;color:#2a2f36;font-size:1.25rem;background:transparent;border:1px solid #c7cfda;border-radius:8px;padding:6px 10px}.nav-links{width:100%;list-style:none;margin:0;padding:0;display:flex;flex-direction:row;justify-content:space-around;gap:8px}.nav-links a{color:#2a2f36;padding:8px 0;display:block}.nav-links.open{display:flex}.banner{background:linear-gradient(135deg,#e6f0ff,#fff);padding:64px 0}.banner__content{text-align:left}.banner h1{color:#0b0d10;font-size:1.75rem;margin:0 0 8px}.banner p{color:#576072;margin:0 0 16px}.btn{display:inline-block;border-radius:8px;padding:10px 14px;font-weight:600;border:1px solid transparent}.btn--primary{background:#1e6bd7;color:#fff}.btn--primary:hover{background:#3a84f7;text-decoration:none}.btn--ghost{background:transparent;border-color:#c7cfda;color:#2a2f36}.btn--ghost:hover{background:#e5eaf0;text-decoration:none}.products{padding:32px var(--space-base)}.products h2{margin:0 0 16px;color:#0b0d10}.product-grid{display:grid;grid-template-columns:1fr;gap:16px}.product-card{background:#fff;border:1px solid #e5eaf0;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #00000014;display:flex;flex-direction:column}.product-card__image img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;background:#e5eaf0}.product-card__body{padding:12px;display:grid;gap:8px}.product-card__title{margin:0;color:#0b2a4a;font-size:1.125rem}.product-card__desc{margin:0;color:#576072}.product-card__actions{display:flex;gap:8px}.about{padding:24px 15px 48px;color:#2a2f36}.site-footer{background:#0b0d10;color:#fff;padding:16px 0;margin-top:24px}.site-footer p{margin:0;text-align:center}.product-page{padding:24px 0 48px}.product-detail{display:grid;gap:16px}.product-detail__image img{width:100%;border-radius:12px;box-shadow:0 2px 8px #00000014}.product-detail__info{display:grid;gap:12px}.muted{color:#576072}.purchase-form{display:grid;gap:12px;padding:12px;border:1px solid #e5eaf0;border-radius:12px}.form-field{display:grid;gap:6px}.form-field input{padding:10px 12px;border-radius:8px;border:1px solid #c7cfda}.form-message{margin:0}.form-message.error{color:#b00020}.form-message.success{color:#006b1b}@media (min-width: 425px){:root{--header-offset: 48px;--space-base: 25px}.top-nav{flex-direction:row}.top-nav .nav-links{width:auto}}@media (min-width: 640px){:root{--space-base: 35px}html{font-size:18px}.product-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 900px){.nav-links{display:flex;flex-direction:row;gap:16px}.menu-toggle{display:none}.banner{padding:72px 0}.banner h1{font-size:2.25rem}.product-grid{grid-template-columns:repeat(3,1fr)}.product-detail{grid-template-columns:1.2fr 1fr;align-items:start}}