:root { --naranja: #F97A28; --oscuro: #16161A; --gris: #6B6B76; --fondo: #F4F4F6; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, "Segoe UI", Inter, Arial, sans-serif; background: var(--fondo); color: var(--oscuro); }
header { background: #fff; color: var(--oscuro); padding: 46px 20px 40px; text-align: center; }
header .logo { width: min(340px, 80%); display: block; margin: 0 auto 6px; }
.marca { font-size: 22px; font-weight: 800; letter-spacing: 6px; text-transform: uppercase; color: var(--naranja); }
.marca span { color: var(--naranja); }
header p { color: var(--gris); margin: 10px 0 0; font-size: 17px; }
main { width: min(980px, 100%); margin: 0 auto; padding: 34px 16px; }
h2 { font-size: 24px; margin: 0 0 16px; }
.apps { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; }
article { background: #fff; border-radius: 22px; padding: 20px; display: flex; gap: 16px; align-items: flex-start; }
article img { width: 64px; height: 64px; border-radius: 16px; object-fit: contain; background: var(--fondo); flex: 0 0 auto; }
article h3 { margin: 0 0 4px; font-size: 18px; }
article p { margin: 0 0 10px; color: var(--gris); font-size: 14px; line-height: 1.45; }
article nav { display: flex; flex-wrap: wrap; gap: 6px 12px; }
article nav a { color: #C9550D; font-weight: 700; font-size: 13px; text-decoration: none; }
article nav a:hover { text-decoration: underline; }
footer { text-align: center; color: var(--gris); font-size: 13px; padding: 26px 16px 34px; }
footer a { color: var(--gris); }

/* Páginas de descarga de cada app (qnttech.com/<app>) */
body.app { background: #fff; }
.descarga { width: min(460px, 100%); margin: 0 auto; padding: 48px 16px 40px; text-align: center; }
.descarga .icono { width: 104px; height: 104px; border-radius: 26px; object-fit: contain; background: var(--fondo); }
.descarga h1 { margin: 16px 0 4px; font-size: 30px; letter-spacing: -0.5px; }
.descarga .lema { margin: 0 0 18px; color: var(--gris); font-size: 17px; }
.descarga ul { list-style: none; padding: 0; margin: 0 0 22px; text-align: left; background: var(--fondo); border-radius: 18px; padding: 14px 18px; }
.descarga li { padding: 6px 0 6px 26px; position: relative; font-size: 15px; line-height: 1.4; }
.descarga li::before { content: '✓'; position: absolute; left: 0; color: var(--naranja); font-weight: 800; }
.tiendas { display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }
.tienda { display: flex; align-items: center; gap: 12px; background: var(--oscuro); color: #fff; border-radius: 14px; padding: 10px 18px; text-decoration: none; text-align: left; }
.tienda span { font-size: 26px; width: 30px; text-align: center; }
.tienda small { display: block; font-size: 11px; opacity: .8; }
.tienda b { font-size: 18px; }
.pronto { color: var(--gris); margin: 6px 0; }
.descarga nav { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 16px; margin-top: 22px; }
.descarga nav a { color: var(--gris); font-size: 13px; }