:root{
  --bg:#f3f7f2; --surface:rgba(255,255,255,.96); --surface2:rgba(237,245,238,.98); --line:rgba(24,68,39,.16); --green:#167a3b; --green-d:#0b5d2a;
  --gold:#8a6500; --gold-bright:#765600; --gold-line:rgba(138,101,0,.35);
  --text:#183324; --dim:#465c4d; --ease:cubic-bezier(.2,.7,.2,1);
  --serif:'Segoe UI',system-ui,sans-serif; --sans:'Segoe UI',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--sans);font-weight:400;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
::selection{background:var(--gold);color:#000}
.eyebrow{font-size:.68rem;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);font-weight:500}
.btn{display:inline-flex;align-items:center;gap:12px;padding:16px 38px;font:600 .82rem var(--sans);letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--gold);cursor:pointer;transition:.4s var(--ease);background:transparent;color:var(--gold)}
.btn-gold{background:linear-gradient(135deg,#ffe36a,#c4e769);color:#153b22;border-color:transparent;font-weight:700}
.btn-gold:hover{background:#ffe36a;color:#153b22;box-shadow:0 0 40px rgba(255,210,26,.35);transform:translateY(-2px)}
.btn-ghost:hover{background:rgba(255,210,26,.1)}
.cursor-glow{position:fixed;width:520px;height:520px;border-radius:50%;pointer-events:none;z-index:0;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(255,210,26,.09),transparent 65%);left:50%;top:40%}

/* ===== WELCOME ===== */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:60px 6vw 104px;overflow:hidden;isolation:isolate}
.hero::before{content:'';position:absolute;inset:0;z-index:-2;background:linear-gradient(180deg,rgba(8,37,22,.10),rgba(8,37,22,.25))}
.hero::after{content:'';position:absolute;inset:0;z-index:-1;opacity:.18;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:72px 72px;mask-image:radial-gradient(ellipse 70% 70% at 50% 45%,#000,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 45%,#000,transparent 75%)}
.crest{width:92px;height:92px;border:1px solid var(--gold-line);border-radius:50%;display:grid;place-items:center;font:500 2rem var(--serif);color:var(--gold);letter-spacing:.05em;margin-bottom:34px;position:relative;animation:fadeUp 1s var(--ease) both}
.crest::before{content:'';position:absolute;inset:7px;border:1px solid var(--gold-line);border-radius:50%}
.hero .eyebrow{animation:fadeUp 1s .1s var(--ease) both;margin-bottom:26px}
.hero h1{font:700 clamp(3.2rem,9vw,7.6rem)/1.02 var(--serif);letter-spacing:-.035em;animation:fadeUp 1.1s .2s var(--ease) both}
.hero h1 em{font-style:italic;color:var(--gold-bright);font-weight:500}
.hero .sub{max-width:680px;margin:28px auto 38px;color:#fff;font-size:clamp(1rem,1.5vw,1.2rem);font-weight:500;text-shadow:0 2px 12px rgba(0,0,0,.8);animation:fadeUp 1.1s .35s var(--ease) both}
.hero .btn{animation:fadeUp 1.1s .5s var(--ease) both}
.hero-stats{display:flex;gap:clamp(30px,7vw,90px);margin-top:64px;animation:fadeUp 1.1s .65s var(--ease) both}
.hero-stats b{display:block;font:500 2.6rem/1 var(--serif);color:var(--gold)}
.hero-stats span{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;font-weight:600;text-shadow:0 2px 8px rgba(0,0,0,.8)}
.hero-foot{position:absolute;bottom:62px;left:0;right:0;font-size:.72rem;letter-spacing:.15em;text-transform:uppercase;color:#fff;font-weight:600;text-shadow:0 2px 8px rgba(0,0,0,.8)}
.marquee{position:fixed;right:0;bottom:0;left:0;z-index:20;overflow:hidden;background:var(--gold);padding:13px 0}
.marquee-track{display:flex;width:max-content;animation:marquee 30s linear infinite}
.marquee-track span{padding:0 34px;font:700 .72rem var(--sans);letter-spacing:.12em;text-transform:uppercase;color:#153b22;white-space:nowrap}
@keyframes marquee{to{transform:translateX(-50%)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}

/* ===== LIBRARY ===== */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1360px;margin:auto;padding:16px 5vw;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{font:700 1.2rem var(--serif);letter-spacing:.08em;text-transform:uppercase}
.logo i{color:var(--gold);font-style:normal;margin:0 .4em}
.back{font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);transition:.3s}
.back:hover{color:var(--gold)}
.lib-head{max-width:1360px;margin:auto;padding:84px 5vw 36px;position:relative;z-index:1}
.lib-head h1{font:700 clamp(2.6rem,6vw,5rem)/1.08 var(--serif);letter-spacing:-.03em;margin:14px 0 18px}
.lib-head h1 em{font-style:italic;color:var(--gold-bright);font-weight:500}
.lib-head p{color:var(--dim);max-width:640px;font-size:1.05rem}
.tools{max-width:1360px;margin:0 auto;padding:0 5vw 34px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;position:relative;z-index:1}
.search{flex:1 1 320px;position:relative}
.search input{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:8px;color:var(--text);padding:15px 18px 15px 46px;font:400 1rem var(--sans);outline:none;transition:.3s}
.search input:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(22,122,59,.14)}
.search input::placeholder{color:#52685a;opacity:1}
.search svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;opacity:.75}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{background:var(--surface);border:1px solid var(--line);border-radius:6px;color:var(--dim);padding:12px 18px;font:600 .76rem var(--sans);letter-spacing:.06em;text-transform:uppercase;cursor:pointer;transition:.3s}
.chip:hover{border-color:var(--gold-line);color:var(--text)}
.chip.on{background:linear-gradient(135deg,#ffe36a,#c4e769);border-color:#b18a19;color:#153b22}
select{background:var(--surface);border:1px solid var(--line);border-radius:6px;color:var(--text);padding:13px 14px;font:400 .9rem var(--sans);outline:none}
.count{max-width:1360px;margin:0 auto;padding:0 5vw 18px;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);position:relative;z-index:1}
.count b{color:var(--green-d);font-weight:700}
.grid{max-width:1360px;margin:0 auto;padding:0 5vw 100px;display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:3px;position:relative;z-index:1}
.card{background:var(--surface);padding:30px 28px 26px;display:flex;flex-direction:column;cursor:pointer;position:relative;overflow:hidden;border:1px solid rgba(24,68,39,.08);border-radius:8px;text-align:left;color:inherit;font:inherit;transition:background .4s,transform .5s var(--ease),box-shadow .4s}
.card::before{content:'';position:absolute;left:0;top:0;height:2px;width:0;background:var(--gold);transition:width .6s var(--ease)}
.card:hover,.card:focus-visible{background:#fff;outline:3px solid rgba(22,122,59,.3);outline-offset:1px;box-shadow:0 12px 30px rgba(23,65,38,.12)}
.card:hover::before,.card:focus-visible::before{width:100%}
.card .num{position:absolute;right:18px;bottom:-14px;font:700 6rem/1 var(--serif);color:rgba(24,68,39,.07);pointer-events:none}
.tag{display:inline-block;align-self:flex-start;font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--green-d);border:1px solid rgba(22,122,59,.32);border-radius:4px;padding:5px 10px;margin-bottom:20px;font-weight:700}
.tag.auto{color:#126b34;border-color:rgba(18,107,52,.4)}
.card h3{font:650 1.2rem/1.45 var(--serif);margin-bottom:6px;display:-webkit-box;line-clamp:4;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.caso{font-size:.9rem;color:var(--gold-bright);margin-bottom:14px;font-weight:600}
.card .autor{margin-top:auto;padding-top:18px;font:600 .95rem var(--sans);letter-spacing:.01em}
.card .meta{font-size:.82rem;color:var(--dim);margin-top:3px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.card .meta .read{color:var(--green-d);letter-spacing:.08em;text-transform:uppercase;font-size:.75rem;font-weight:700;opacity:0;transform:translateX(-6px);transition:.4s}
.card:hover .read{opacity:1;transform:none}
.empty{grid-column:1/-1;text-align:center;padding:90px 0;color:var(--dim)}
.footer{border-top:1px solid var(--line);padding:40px 5vw;text-align:center;font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);position:relative;z-index:1}

/* ===== MODAL / VIEWER ===== */
.modal{position:fixed;inset:0;z-index:100;display:none;background:rgba(18,44,27,.62);backdrop-filter:blur(8px)}
.modal.open{display:block;animation:fade .3s}
@keyframes fade{from{opacity:0}}
.panel{position:absolute;inset:3vh 3vw;display:grid;grid-template-columns:340px 1fr;background:#fff;border:1px solid var(--gold-line);border-radius:10px;overflow:hidden}
.side{padding:34px 28px;overflow-y:auto;border-right:1px solid var(--line);background:var(--surface2)}
.side h2{font:500 1.5rem/1.25 var(--serif);margin:14px 0 22px}
.side dl{display:grid;gap:15px}
.side dt{font-size:.58rem;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);margin-bottom:2px}
.side dd{font-size:.95rem}
.close{position:absolute;top:12px;right:14px;z-index:5;width:42px;height:42px;background:#fff;border:1px solid var(--gold-line);border-radius:6px;color:var(--green-d);font-size:1.3rem;cursor:pointer;transition:.3s}
.close:hover{background:var(--gold);color:#000}
.viewer{position:relative;overflow-y:auto;background:#edf2ed;user-select:none;-webkit-user-select:none;scroll-behavior:auto}
.viewer .pages{padding:28px 20px 60px;display:flex;flex-direction:column;align-items:center;gap:16px}
.viewer canvas{max-width:100%;height:auto!important;box-shadow:0 10px 40px rgba(0,0,0,.6);background:#fff;pointer-events:none}
.pg-ph{background:#e1ebe2;width:min(900px,100%);aspect-ratio:1/1.3;display:grid;place-items:center;color:#435c4a;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase}
.vbar{position:sticky;top:0;z-index:4;display:flex;justify-content:center;gap:10px;align-items:center;padding:10px;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);font-size:.82rem;color:var(--dim)}
.vbar button{background:transparent;border:1px solid var(--line);color:var(--text);width:34px;height:34px;cursor:pointer;font-size:1rem}
.vbar button:hover{border-color:var(--gold);color:var(--gold)}
.vmsg{padding:80px 30px;text-align:center;color:var(--dim)}
.vmsg b{display:block;font:500 1.6rem var(--serif);color:var(--text);margin-bottom:8px}
@media print{body{display:none!important}}
@media(max-width:900px){
  .panel{inset:0;grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .side{max-height:34vh;border-right:0;border-bottom:1px solid var(--line);padding:22px 18px}
  .hero-stats{gap:28px}
  .grid{grid-template-columns:1fr}
}

/* ===== VIDEO DE FONDO + LOGO ===== */
body{background:var(--bg)}
.bg-video{position:fixed;inset:0;z-index:-1;overflow:hidden;background:
  radial-gradient(ellipse 80% 60% at 20% 10%,#b5dbb8,transparent 70%),
  radial-gradient(ellipse 70% 60% at 90% 90%,#f5e7a7,transparent 70%),#eaf1e9}
@keyframes pulseBg{to{filter:hue-rotate(-12deg) brightness(1.15)}}
.bg-video video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.bg-video::after{content:'';position:absolute;inset:0;background:rgba(243,247,242,.82)}
.bg-video.dim::after{background:rgba(243,247,242,.96)}
.bg-video.welcome-video video{filter:brightness(1.12) saturate(1.05)}
.bg-video.welcome-video::after{background:linear-gradient(90deg,rgba(10,43,25,.30),rgba(10,43,25,.04) 55%,rgba(10,43,25,.2))}
.crest{border:0;width:auto;height:auto;border-radius:0;margin-bottom:30px}
.crest::before{display:none}
.crest img{height:clamp(110px,16vw,160px);width:auto;display:block;filter:drop-shadow(0 8px 22px rgba(0,0,0,.42))}
.crest.noimg{width:92px;height:92px;border:1px solid var(--gold-line);border-radius:50%;display:grid;place-items:center}
.crest.noimg::after{content:'SB';font:500 2rem var(--serif);color:var(--gold)}
.logo{display:flex;align-items:center;gap:14px}
.logo img{height:44px;width:auto}
.hero h1{color:#fff;text-shadow:0 3px 20px rgba(0,0,0,.72)}
.hero h1 em{background:linear-gradient(90deg,#ffe36a,#d2f27a);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .eyebrow{color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.85);font-family:Georgia,'Times New Roman',serif;font-size:2rem;font-weight:500;line-height:1.3;letter-spacing:.16em}
.lib-head h1 em{background:linear-gradient(90deg,#987000,#167a3b);-webkit-background-clip:text;background-clip:text;color:transparent}
.marquee{background:linear-gradient(90deg,#e6c849,#b7db72,#e6c849)}
.marquee-track span{color:#183324}
.marquee-track span::first-letter{color:inherit}
.hero-stats b{background:linear-gradient(180deg,#fff3a2,#d2f27a);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.card::before{background:linear-gradient(90deg,var(--gold),var(--green))}
.footer{color:var(--dim)}
@media(max-width:600px){
  .cursor-glow{display:none}
  .nav-inner{padding:12px 4vw;gap:8px}
  .logo{gap:8px;font-size:.9rem;letter-spacing:.02em;white-space:nowrap}
  .logo img{height:34px}
  .back{font-size:.68rem;letter-spacing:.04em;white-space:nowrap}
  .hero{padding:52px 7vw 116px}
  .crest img{height:112px}
  .hero .eyebrow{max-width:90vw;font-size:1.7rem}
  .hero-stats{gap:20px;margin-top:46px}
  .hero-stats b{font-size:2.2rem}
  .hero-stats span{font-size:.66rem}
  .hero-foot{font-size:.64rem;bottom:58px}
  .btn{padding:15px 22px;font-size:.76rem}
  .lib-head{padding-top:52px}
  .tools{align-items:stretch}
  .tools select{width:100%}
}