*{box-sizing:border-box}body{margin:0;background:#f5f7fa;color:#172d42;font-family:Arial,Helvetica,sans-serif}.container{max-width:1000px;margin:auto;padding:28px 24px 0}.header{max-width:760px;margin:0 auto 30px}.marca{display:block;max-width:380px;margin:0 auto 28px}.logo{display:block;width:100%;height:auto}.header>br{display:none}.photo{float:right;width:100px;height:100px;border-radius:50%;object-fit:cover;margin:0 0 18px 20px;border:1px solid #e4e9ef}h1{font-size:32px;font-weight:600;line-height:1.15;letter-spacing:0;margin:12px 0}h2{font-size:17px;font-weight:600;line-height:1.3}.subtitle{font-size:14px;color:#63768b;line-height:1.5;margin:12px 0}.intro{font-size:16px;line-height:1.6;color:#63768b;margin:18px 0 0}.header:after{content:"";display:block;clear:both}.menu{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:760px;margin:30px auto}.menu a{display:block;background:#fff;border:1px solid #e4e9ef;border-radius:16px;padding:24px 20px;color:#172d42;text-decoration:none;box-shadow:0 4px 14px #19385206;transition:transform .15s,box-shadow .15s}.menu a:hover{transform:translateY(-3px);box-shadow:0 8px 20px #19385212}.menu strong{display:block;font-size:17px;font-weight:600;line-height:1.3;margin-bottom:8px}.menu em{display:inline-block;font-style:normal;font-size:12px;background:#eef3f9;color:#365c87;padding:5px 9px;border-radius:8px;margin-bottom:10px}.menu a:nth-child(3n+2) em{background:#eaf3ec;color:#44815a}.menu a:nth-child(3n) em{background:#faf1e1;color:#a77929}.menu span{display:block;color:#63768b;font-size:13px;line-height:1.5}.books{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:30px auto;max-width:900px}.book{display:flex;flex-direction:column;padding:24px;background:#fff;border:1px solid #e4e9ef;border-radius:16px;box-shadow:0 4px 14px #19385206;min-width:0}.book img{display:block;width:100%;height:280px;object-fit:contain;margin-bottom:22px}.book-content{display:flex;flex-direction:column;flex:1}.book h2{margin:0 0 10px}.book p{margin:8px 0;color:#63768b;font-size:14px;line-height:1.6}.book .code{font-size:12px}.book .price{color:#172d42;font-weight:600}.button{margin-top:auto;padding-top:16px}.button a,.boton{display:inline-flex;align-items:center;justify-content:center;min-height:44px;background:#365c87;color:#fff;padding:12px 18px;border-radius:10px;text-decoration:none;font-size:14px;font-weight:600;line-height:1.4}.button a:hover,.boton:hover{background:#29496e}.back{max-width:760px;margin:28px auto}.back a{display:inline-flex;align-items:center;min-height:44px;color:#365c87;text-decoration:none;font-size:14px}.back a:hover{text-decoration:underline}.contacto{max-width:760px;margin:36px auto 0;padding:28px 0;border-top:1px solid #e4e9ef}.etiqueta{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:#63768b;margin:0 0 10px}.contacto h2{font-size:28px;margin:12px 0}.contacto>p:not(.etiqueta){color:#63768b;line-height:1.5;margin:0 0 20px}.footer{display:flex;align-items:center;justify-content:space-between;gap:20px;max-width:760px;margin:12px auto 0;padding:26px 0;border-top:1px solid #e4e9ef;background:transparent}.footer p{margin:0 0 8px;font-size:14px}.footer .footer-nombre{font-size:18px;font-weight:600}.footer a{color:inherit;font-size:14px;text-decoration:none;display:inline-flex;align-items:center;min-height:44px}.footer a:hover{text-decoration:underline}.footer-marca{flex:0 0 115px}.footer-marca img{width:100%;height:auto;max-height:85px;object-fit:contain}a:focus-visible{outline:3px solid #365c87;outline-offset:4px}@media(max-width:520px){.container{padding:24px 16px 0}.menu,.books{grid-template-columns:1fr}h1{font-size:28px}.photo{width:75px;height:75px;margin-left:12px}.marca{margin-bottom:24px}.menu a,.book{padding:20px 16px}.footer-marca{flex-basis:85px}.contacto h2{font-size:25px}}@media(prefers-reduced-motion:reduce){.menu a{transition:none}.menu a:hover{transform:none}}

/* Logo, menú uniforme y relieve compartido */
.libreria-logo{max-width:808px;margin:auto;padding:8px 24px 0;display:flex;justify-content:center;align-items:center;}
.libreria-logo .marca{margin:0;max-width:210px;}
.libreria-logo .logo{max-width:210px;max-height:110px;object-fit:contain;}
.vj-menu-horizontal{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;padding:12px 16px 22px;}
.vj-menu-horizontal a{box-sizing:border-box;display:inline-flex;justify-content:center;align-items:center;flex:0 0 130px;width:130px;height:44px;padding:10px;background:#fff;color:#365c87;border:1px solid #e4e9ef;border-radius:12px;font:14px Arial,sans-serif;text-decoration:none;white-space:nowrap;}
.menu a,.button a,.boton,.vj-menu-horizontal a{box-shadow:inset 0 1px 0 rgba(255,255,255,.45),inset 0 -1px 0 rgba(0,0,0,.08),0 3px 5px rgba(30,45,40,.10),0 8px 16px rgba(30,45,40,.12);transition:transform 180ms ease,box-shadow 180ms ease;}
@media(hover:hover){.menu a:hover,.button a:hover,.boton:hover,.vj-menu-horizontal a:hover{transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),inset 0 -1px 0 rgba(0,0,0,.08),0 5px 8px rgba(30,45,40,.10),0 12px 22px rgba(30,45,40,.16);}}
@media(hover:none){.menu a:hover{transform:none;}}
.menu a:active,.button a:active,.boton:active,.vj-menu-horizontal a:active{transform:translateY(1px);box-shadow:inset 0 2px 4px rgba(0,0,0,.12),0 2px 4px rgba(30,45,40,.10);}
@media(max-width:520px){.libreria-logo{padding:0 16px;}.libreria-logo .marca,.libreria-logo .logo{max-width:180px;}.libreria-logo .logo{max-height:95px;}}
@media(prefers-reduced-motion:reduce){.menu a,.button a,.boton,.vj-menu-horizontal a{transition:none;}.menu a:hover,.button a:hover,.boton:hover,.vj-menu-horizontal a:hover,.menu a:active,.button a:active,.boton:active,.vj-menu-horizontal a:active{transform:none;}}


/* Geometría compartida: medidas explícitas, sin colapso de márgenes */
.container{padding:0 24px;display:flex;flex-direction:column;}
.libreria-logo{box-sizing:border-box;width:100%;max-width:none;margin:0;padding:24px 20px;display:flex;justify-content:center;}
.libreria-logo .marca{width:380px;max-width:100%;margin:0;}
.libreria-logo .logo{width:100%;max-width:none;max-height:none;height:auto;}
.vj-menu-horizontal{margin:0;padding:12px 16px 0;}
.header{width:100%;max-width:760px;margin:70px auto 30px;display:flow-root;}
.header h1{margin:0;text-align:center;font-size:32px;line-height:1.15;font-weight:600;}
.header:after{display:none;}
.menu,.books{width:100%;margin:0 auto 56px;}
.footer{width:100%;margin:0 auto;}
@media(max-width:520px){
.container{padding:0 16px;}
.libreria-logo{width:calc(100% + 32px);margin:0 -16px;padding:24px 20px;}
.libreria-logo .marca{width:380px;max-width:100%;}
.libreria-logo .logo{max-width:none;max-height:none;}
.header{margin-top:58px;}
.header h1{font-size:28px;}
.menu,.books{margin-bottom:40px;}
}