:root{--navy:#173b65;--navy-deep:#0e2948;--blue:#2e75bb;--sky:#eaf4fb;--ink:#17212e;--muted:#627083;--line:#dce4ec;--paper:#f7f9fb;--white:#fff;--lime:#d7ef6b;--shadow:0 18px 50px rgba(18,48,80,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.5 "DM Sans",sans-serif}.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.93);border-bottom:1px solid rgba(220,228,236,.9);backdrop-filter:blur(14px)}.header-inner{height:76px;display:flex;align-items:center;gap:34px}.brand{display:flex;align-items:center;gap:10px;font:800 1.28rem/1 "Manrope",sans-serif;letter-spacing:-.04em}.brand>span:last-child>span{color:var(--blue)}.brand-mark{display:grid;place-items:center;width:36px;height:40px;border-radius:8px 8px 12px 6px;background:var(--navy);color:#fff;font-size:1.25rem;box-shadow:inset -5px 0 0 rgba(255,255,255,.12)}.desktop-nav{display:flex;align-items:center;gap:28px;font-weight:600;color:#4e5d6d}.desktop-nav a{padding:27px 0 23px;border-bottom:3px solid transparent}.desktop-nav a.active{color:var(--navy);border-color:var(--blue)}.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}.location-button{display:flex;align-items:center;gap:7px;border:0;background:transparent;color:var(--muted);font-weight:600}.location-button svg{width:18px;fill:var(--blue)}.button{border:0;border-radius:11px;padding:11px 18px;font-weight:700;transition:.18s transform,.18s background,.18s box-shadow}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--navy);color:#fff;box-shadow:0 8px 20px rgba(23,59,101,.18)}.button.primary:hover{background:var(--navy-deep)}.button.ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}
.search-stage{overflow:hidden;background:var(--navy);color:#fff;position:relative}.search-stage:before{content:"";position:absolute;inset:auto -15% -55% 35%;height:430px;background:radial-gradient(circle,rgba(76,161,220,.32),transparent 67%)}.stage-grid{min-height:440px;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(310px,.7fr);gap:70px;align-items:center;padding-block:58px;position:relative}.eyebrow{display:block;color:var(--lime);font-size:.78rem;font-weight:800;letter-spacing:.16em;margin-bottom:12px}.eyebrow.dark{color:var(--blue)}h1,h2,h3{font-family:"Manrope",sans-serif;margin-top:0}h1{max-width:780px;margin-bottom:14px;font-size:clamp(2.3rem,5vw,4.35rem);line-height:1.02;letter-spacing:-.055em}.stage-copy>p{font-size:1.14rem;color:#d5e1ec;margin:0 0 28px}.finder{max-width:760px;background:#fff;border-radius:14px;padding:7px;display:flex;gap:8px;box-shadow:0 16px 40px rgba(0,0,0,.2)}.search-field{flex:1;display:flex;align-items:center;gap:10px;padding:0 10px}.search-field svg{width:23px;fill:none;stroke:#728195;stroke-width:2}.search-field input{width:100%;height:48px;border:0;outline:0;color:var(--ink);font-size:1rem}.search-button{background:var(--lime);color:var(--navy-deep);padding-inline:24px}.quick-filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.filter-chip{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06);color:#e9f1f8;padding:7px 13px;border-radius:999px;font-weight:600}.filter-chip.selected,.filter-chip:hover{background:#fff;color:var(--navy);border-color:#fff}.campus-panel{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.15);border-radius:22px;padding:16px;box-shadow:0 28px 55px rgba(0,0,0,.12)}.campus-map{height:174px;position:relative;border-radius:14px;overflow:hidden;background:linear-gradient(145deg,#31597e,#244767)}.campus-map:before,.campus-map:after{content:"";position:absolute;width:170px;height:100px;border:1px solid rgba(255,255,255,.12);border-radius:50%;transform:rotate(-18deg)}.campus-map:before{top:-25px;left:-30px}.campus-map:after{right:-20px;bottom:-30px}.river{position:absolute;left:47%;top:-20%;width:34px;height:150%;background:rgba(83,177,226,.35);transform:rotate(18deg);filter:blur(2px)}.map-label{position:absolute;font-weight:700;font-size:.78rem}.map-label.parana{left:19%;top:37%}.map-label.santa-fe{right:13%;bottom:30%}.map-dot{position:absolute;width:13px;height:13px;background:var(--lime);border:3px solid #fff;border-radius:50%;box-shadow:0 0 0 5px rgba(215,239,107,.18)}.dot-one{left:28%;top:55%}.dot-two{right:29%;bottom:20%}.dot-three{right:18%;top:27%}.campus-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:17px 4px 8px}.campus-stats div+div{border-left:1px solid rgba(255,255,255,.16);padding-left:18px}.campus-stats strong{display:block;font:800 1.6rem/1 "Manrope"}.campus-stats span{font-size:.78rem;color:#c9d7e5}.campus-panel>p{margin:7px 4px 2px;font-size:.8rem;color:#dbe7f1}.live-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--lime);margin-right:5px}
.trust-bar{background:#fff;border-bottom:1px solid var(--line)}.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);padding-block:20px}.trust-grid>div{display:flex;align-items:center;justify-content:center;gap:12px}.trust-grid>div+div{border-left:1px solid var(--line)}.trust-icon{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;background:var(--sky);color:var(--blue);font-weight:800}.trust-grid p{margin:0;color:var(--muted);font-size:.86rem}.trust-grid strong{color:var(--ink)}
.catalog{padding-block:72px 80px}.section-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:26px}.section-heading h2{margin:0;font-size:clamp(1.8rem,3vw,2.55rem);letter-spacing:-.045em;line-height:1.1}.text-button{border:0;background:transparent;color:var(--blue);font-weight:700;font-size:1rem}.text-button span{margin-left:4px}.book-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.book-card{display:grid;grid-template-rows:248px 1fr;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 4px 18px rgba(25,49,75,.05);transition:.2s transform,.2s box-shadow}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.book-card[hidden]{display:none}.book-visual{position:relative;padding:32px 27px;color:#fff;display:flex;flex-direction:column;justify-content:end;overflow:hidden}.book-visual:after{content:"";position:absolute;width:110px;height:290px;right:-56px;top:-14px;background:rgba(255,255,255,.09);transform:rotate(18deg)}.cover-law{background:linear-gradient(145deg,#1a3d69,#326eaa)}.cover-med{background:linear-gradient(145deg,#17666f,#38a1a0)}.cover-eng{background:linear-gradient(145deg,#713c27,#c67748)}.condition{position:absolute;left:16px;top:16px;background:rgba(255,255,255,.94);color:var(--ink);border-radius:999px;padding:5px 9px;font-size:.72rem;font-weight:700}.cover-kicker{font-size:.73rem;text-transform:uppercase;letter-spacing:.13em;opacity:.8}.book-visual strong{font:800 1.58rem/1.06 "Manrope";letter-spacing:-.03em;margin:6px 0}.book-visual small{opacity:.78}.book-info{padding:20px;display:flex;flex-direction:column}.subject{font-size:.76rem;color:var(--blue);font-weight:800;text-transform:uppercase;letter-spacing:.06em}.book-info h3{font-size:1.08rem;line-height:1.25;letter-spacing:-.02em;margin:8px 0 4px}.edition{font-size:.83rem;color:var(--muted);margin:0 0 18px}.offer-summary{margin-top:auto;border-top:1px solid var(--line);padding-top:15px;display:flex;align-items:end;justify-content:space-between;color:var(--muted);font-size:.8rem}.offer-summary span strong{display:block;color:var(--ink);font-size:.87rem}.price{font:800 1.36rem/1 "Manrope";color:var(--ink)}.seller-row{display:flex;justify-content:space-between;gap:10px;font-size:.76rem;color:var(--muted);margin:12px 0}.rating{color:#9b6a00;font-weight:700}.card-button{width:100%;background:var(--sky);color:var(--navy)}.card-button:hover{background:#d9ecf9}.empty-state{text-align:center;background:#fff;border:1px dashed #b9c8d6;border-radius:18px;padding:48px}.empty-state strong{font:700 1.25rem "Manrope"}.empty-state p{color:var(--muted)}
.how-section{background:var(--navy-deep);color:#fff;padding-block:70px}.section-heading.compact{max-width:720px}.how-section h2{font-size:clamp(1.8rem,3vw,2.8rem)}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.steps article{padding:26px;border:1px solid rgba(255,255,255,.13);border-radius:16px;background:rgba(255,255,255,.05)}.steps article>span{color:var(--lime);font:800 .8rem "Manrope";letter-spacing:.1em}.steps h3{margin:22px 0 8px;font-size:1.15rem}.steps p{color:#bdcad7;margin:0;font-size:.91rem}.sell-section{margin-block:70px;display:flex;align-items:center;justify-content:space-between;gap:60px;padding:40px 46px;background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:0 15px 40px rgba(19,48,80,.07)}.sell-section>div{max-width:720px}.sell-section h2{font-size:clamp(1.7rem,3vw,2.35rem);letter-spacing:-.04em;margin-bottom:10px}.sell-section p{margin:0;color:var(--muted)}.button.large{white-space:nowrap;padding:15px 23px}.donation-section{padding-bottom:72px}.donation-card{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;background:#eaf4fb;border:1px solid #cfe2f1;border-radius:18px;padding:28px 34px}.donation-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;background:#fff;color:#e44762;font-size:1.4rem}.donation-card h2{font-size:1.23rem;margin:0 0 4px}.donation-card p{margin:0;color:var(--muted);font-size:.9rem}.donation-actions{display:flex;gap:9px}.donate{padding:11px 15px;border-radius:10px;font-weight:800;font-size:.85rem}.donate.paypal{background:#ffc439;color:#142c54}.donate.mercadopago{background:#009ee3;color:#fff}footer{background:#fff;border-top:1px solid var(--line);padding:34px 0 104px}.footer-inner{display:flex;align-items:center;gap:30px}.footer-brand{font-size:1rem}.footer-brand .brand-mark{width:30px;height:33px;font-size:1rem}.footer-inner p{color:var(--muted);font-size:.85rem}.footer-inner>div{margin-left:auto;display:flex;gap:20px;color:var(--muted);font-size:.82rem}.mobile-nav{display:none}
dialog{border:0;padding:0;border-radius:18px;box-shadow:0 28px 90px rgba(5,24,44,.35);width:min(460px,calc(100% - 30px))}dialog::backdrop{background:rgba(10,29,48,.63);backdrop-filter:blur(3px)}.modal-content{padding:34px;position:relative}.modal-close{position:absolute;top:12px;right:14px;width:34px;height:34px;border:0;border-radius:50%;background:var(--paper);font-size:1.5rem;color:var(--muted)}.modal-content h2{font-size:1.65rem;margin-bottom:8px}.modal-content p{color:var(--muted);margin-top:0}.modal-form{display:grid;gap:12px;margin-top:20px}.modal-form label{font-size:.82rem;font-weight:700}.modal-form input,.modal-form select{width:100%;margin-top:5px;border:1px solid var(--line);border-radius:10px;padding:12px;background:#fff}.modal-form .button{margin-top:7px}.toast{position:fixed;z-index:60;left:50%;bottom:26px;transform:translate(-50%,20px);background:var(--ink);color:#fff;border-radius:10px;padding:12px 18px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;white-space:nowrap;max-width:calc(100% - 30px);overflow:hidden;text-overflow:ellipsis}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:980px){.desktop-nav,.location-button{display:none}.stage-grid{grid-template-columns:1fr;gap:34px}.campus-panel{display:grid;grid-template-columns:1.3fr 1fr;align-items:center}.campus-stats{grid-template-columns:1fr}.campus-stats div+div{border-left:0;padding-left:0}.campus-panel>p{grid-column:2}.book-grid{grid-template-columns:repeat(2,1fr)}.book-card:last-child{display:none}.donation-card{grid-template-columns:auto 1fr}.donation-actions{grid-column:2}.sell-section{padding:34px}}
@media(max-width:680px){.shell{width:min(100% - 28px,1180px)}.header-inner{height:64px}.header-actions .ghost{display:none}.header-actions .primary{padding:10px 12px}.brand-mark{width:32px;height:36px}.stage-grid{padding-block:38px 34px;min-height:auto}.stage-copy h1{font-size:2.35rem}.stage-copy>p{font-size:1rem}.finder{display:block;padding:6px}.search-field{padding:0 8px}.search-button{width:100%;margin-top:5px;height:46px}.quick-filters{flex-wrap:nowrap;overflow:auto;margin-right:-14px;padding-right:14px;scrollbar-width:none}.filter-chip{white-space:nowrap}.campus-panel{display:block}.campus-map{height:145px}.campus-stats{grid-template-columns:1fr 1fr}.campus-stats div+div{border-left:1px solid rgba(255,255,255,.16);padding-left:18px}.campus-panel>p{grid-column:auto}.trust-grid{grid-template-columns:1fr;padding:10px 0}.trust-grid>div{justify-content:flex-start;padding:10px 14px}.trust-grid>div+div{border-left:0;border-top:1px solid var(--line)}.catalog{padding-block:50px}.section-heading{align-items:start;gap:10px}.section-heading .text-button{white-space:nowrap;margin-top:25px}.book-grid{grid-template-columns:1fr}.book-card:last-child{display:grid}.book-card{grid-template-columns:120px 1fr;grid-template-rows:auto;min-height:270px}.book-visual{padding:18px 12px}.book-visual strong{font-size:1rem;word-break:break-word}.condition{left:8px;top:8px;font-size:.62rem}.cover-kicker{font-size:.61rem}.book-info{padding:16px}.price{font-size:1.15rem}.steps{grid-template-columns:1fr}.how-section{padding-block:52px}.sell-section{margin-block:45px;display:block;padding:28px}.sell-section .button{width:100%;margin-top:22px}.donation-section{padding-bottom:48px}.donation-card{grid-template-columns:1fr;text-align:center;padding:26px 20px}.donation-icon{margin:auto}.donation-actions{grid-column:1;display:grid}.footer-inner{display:block;text-align:center}.footer-brand{justify-content:center}.footer-inner>div{margin:20px 0 0;justify-content:center}.mobile-nav{position:fixed;z-index:30;display:grid;grid-template-columns:repeat(3,1fr);left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:8px 10px max(8px,env(safe-area-inset-bottom));box-shadow:0 -8px 24px rgba(23,59,101,.08)}.mobile-nav a,.mobile-nav button{border:0;background:transparent;display:grid;justify-items:center;gap:2px;color:var(--muted);font-size:.72rem;font-weight:700}.mobile-nav span{font-size:1.35rem;line-height:1}.mobile-nav .active{color:var(--blue)}footer{padding-bottom:105px}.toast{bottom:86px}.modal-content{padding:28px 22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}