:root{
  --bg:#f6f7f9; --surface:#ffffff; --ink:#1a2230; --muted:#5c6a7e;
  --line:#e2e7ee; --accent:#0b6bab; --accent-soft:#e6f1f9; --accent-ink:#084c7a;
  --sidebar:#0e1c2b; --sidebar-ink:#c7d4e2; --sidebar-hi:#ffffff; --mark:#fff2a8;
  --shadow:0 1px 3px rgba(16,32,54,.08),0 6px 24px rgba(16,32,54,.06);
  --radius:12px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0d1420;--surface:#141e2c;--ink:#e6edf6;--muted:#93a2b6;
    --line:#243247;--accent:#4aa8e0;--accent-soft:#12283a;--accent-ink:#8fccee;
    --sidebar:#0a121d;--sidebar-ink:#9fb0c4;--sidebar-hi:#fff;--mark:#5a5320;
    --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 30px rgba(0,0,0,.35);}
}
:root[data-theme=dark]{--bg:#0d1420;--surface:#141e2c;--ink:#e6edf6;--muted:#93a2b6;
  --line:#243247;--accent:#4aa8e0;--accent-soft:#12283a;--accent-ink:#8fccee;
  --sidebar:#0a121d;--sidebar-ink:#9fb0c4;--sidebar-hi:#fff;--mark:#5a5320;}
:root[data-theme=light]{--bg:#f6f7f9;--surface:#fff;--ink:#1a2230;--muted:#5c6a7e;
  --line:#e2e7ee;--accent:#0b6bab;--accent-soft:#e6f1f9;--accent-ink:#084c7a;
  --sidebar:#0e1c2b;--sidebar-ink:#c7d4e2;--sidebar-hi:#fff;--mark:#fff2a8;}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:320px 1fr;min-height:100vh}
.sidebar{background:var(--sidebar);color:var(--sidebar-ink);position:sticky;top:0;
  height:100vh;overflow-y:auto;padding:0 0 40px;overscroll-behavior:contain}
@supports (height:100dvh){.sidebar{height:100dvh}}
.sidebar::-webkit-scrollbar{width:9px}
.sidebar::-webkit-scrollbar-thumb{background:#2a3a4e;border-radius:9px}
.brand{padding:20px 22px 14px;border-bottom:1px solid rgba(255,255,255,.08);
  position:sticky;top:0;background:var(--sidebar);z-index:2}
.brand a{color:var(--sidebar-hi);font-weight:700;font-size:1.05rem;letter-spacing:.2px}
.brand small{display:block;color:var(--sidebar-ink);font-weight:400;font-size:.72rem;
  text-transform:uppercase;letter-spacing:.14em;margin-top:3px;opacity:.75}
.ed-bar{display:flex;align-items:center;gap:8px;margin-top:8px}
.ed-badge{background:var(--accent);color:#fff;font-size:.68rem;font-weight:700;
  padding:2px 9px;border-radius:20px;letter-spacing:.03em}
/* especificidad .brand .ed-switch para vencer a `.brand a{font-size:1.05rem}` */
.brand .ed-switch{display:inline-block;margin-top:6px;color:var(--sidebar-ink);
  font-size:.62rem;line-height:1.2;opacity:.4;font-weight:400;letter-spacing:.02em}
.brand .ed-switch:hover{opacity:.85;color:#fff;text-decoration:underline}
.search-wrap{padding:12px 16px;position:relative}
.search-wrap input{width:100%;padding:9px 32px 9px 12px;border-radius:8px;border:1px solid #2a3a4e;
  background:#0a121d;color:#e8eff7;font-size:.9rem}
.search-wrap input::placeholder{color:#6b7c90}
.search-wrap input:focus{outline:none;border-color:var(--accent)}
/* usamos nuestro propio botón de limpiar (consistente entre navegadores) */
.search-wrap input::-webkit-search-cancel-button{-webkit-appearance:none;display:none}
.search-wrap .clear{position:absolute;right:24px;top:50%;transform:translateY(-50%);
  background:none;border:0;color:#8fa2b8;font-size:1.25rem;line-height:1;cursor:pointer;
  padding:0 4px;border-radius:5px}
.search-wrap .clear:hover{color:#fff;background:rgba(255,255,255,.1)}
.nav{padding:6px 10px}
.nav .cap{margin:2px 0}
.nav .cap>summary{list-style:none;cursor:pointer;padding:8px 12px;border-radius:8px;
  color:var(--sidebar-hi);font-weight:600;font-size:.9rem;display:flex;gap:8px;align-items:center}
.nav .cap>summary::-webkit-details-marker{display:none}
.nav .cap>summary:hover{background:rgba(255,255,255,.06)}
.nav .cap>summary .chev{transition:transform .18s;font-size:.7rem;opacity:.7}
.nav .cap[open]>summary .chev{transform:rotate(90deg)}
.nav .cap .num{background:var(--accent);color:#fff;border-radius:6px;font-size:.68rem;
  padding:1px 7px;font-weight:700;min-width:26px;text-align:center}
.nav ol{list-style:none;margin:2px 0 8px;padding:0 0 0 8px}
.nav ol li a{display:block;padding:6px 12px 6px 22px;color:var(--sidebar-ink);
  font-size:.83rem;border-radius:7px;border-left:2px solid transparent}
.nav ol li a:hover{background:rgba(255,255,255,.05);text-decoration:none;color:#fff}
.nav ol li a.active{background:var(--accent-soft);color:var(--accent-ink);
  border-left-color:var(--accent);font-weight:600}

/* ---------- main ---------- */
.main{min-width:0;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:14px;padding:10px 26px}
.crumbs{color:var(--muted);font-size:.83rem;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crumbs a{color:var(--muted)}
.icon-btn{background:transparent;border:1px solid var(--line);color:var(--ink);
  border-radius:8px;padding:6px 10px;cursor:pointer;font-size:.85rem}
.icon-btn:hover{background:var(--accent-soft)}
.menu-toggle{display:none}

.content{max-width:860px;width:100%;margin:0 auto;padding:34px 30px 80px}
.article{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:40px 46px}
.eyebrow{color:var(--accent);font-size:.74rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.14em;margin-bottom:8px}

/* legibilidad del HTML antiguo */
.doc{font-size:1.02rem;color:var(--ink);overflow-wrap:break-word}
.doc img{max-width:100%;height:auto}
.doc b,.doc strong{color:var(--ink)}
.doc font[size="+1"],.doc font[size="+2"]{font-size:1.5rem;line-height:1.25;font-weight:700;
  display:inline-block;margin:.2em 0}
.doc>b:first-child font{color:var(--ink)}
.doc font[size="-1"]{font-size:.9rem;color:var(--muted)}
.doc p{margin:0 0 1em}
.doc br+br{content:""}
.doc sup{font-size:.72em;color:var(--accent)}
/* las tablas del CD traen width fijo (hasta ~620px); display:block + fit-content
   las deja centradas con su ancho natural, envuelve el texto al espacio disponible
   y solo hace scroll horizontal cuando el contenido rígido no cabe */
.doc table{border-collapse:collapse;margin:1.2em auto;font-size:.9rem;
  display:block;width:auto;width:fit-content;max-width:100%;
  overflow-x:auto;-webkit-overflow-scrolling:touch}
.doc td,.doc th{border:1px solid var(--line);padding:6px 10px;vertical-align:top}
.doc img.figthumb{max-width:230px;height:auto;border:1px solid var(--line);border-radius:8px;
  cursor:zoom-in;transition:transform .15s,box-shadow .15s;background:#fff;padding:4px;margin:4px}
.doc img.figthumb:hover{transform:scale(1.02);box-shadow:var(--shadow)}
.doc img.inlineimg{max-width:100%;height:auto;border-radius:8px;margin:1em 0}
.doc a.figref{color:var(--accent);font-weight:600;cursor:pointer}
.doc a.apref{color:var(--accent);font-weight:600}
.doc center{display:block}

/* las anclas del cuerpo son el destino de los saltos del índice; el offset evita
   que la barra superior fija (sticky) tape el título de la sección al llegar */
.doc .sec-anchor{display:block;position:relative;top:0;scroll-margin-top:64px}
:target{scroll-margin-top:64px}

/* outline lateral del artículo */
.article-toc{background:var(--accent-soft);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 22px;margin:0 0 26px}
.article-toc>summary{cursor:pointer;list-style:none;padding:16px 0;display:flex;align-items:center;gap:8px}
.article-toc>summary::-webkit-details-marker{display:none}
.article-toc>summary::before{content:"▸";color:var(--accent-ink);font-size:.8rem;transition:transform .18s}
.article-toc[open]>summary::before{transform:rotate(90deg)}
.article-toc h2{margin:0;font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--accent-ink);display:inline}
.article-toc ul{margin:0 0 18px;padding-left:18px;font-size:.9rem}
.article-toc li{margin:4px 0}
.article-toc a{color:var(--accent-ink)}
.article-toc a:hover{text-decoration:underline}

/* navegación prev/next */
.pager{display:flex;gap:14px;max-width:860px;margin:26px auto 0;padding:0 30px}
.pager a{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px 20px;box-shadow:var(--shadow);transition:border-color .15s}
.pager a:hover{border-color:var(--accent);text-decoration:none}
.pager a.next{text-align:right}
.pager .lbl{display:block;color:var(--muted);font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:4px}
.pager .ttl{color:var(--ink);font-weight:600;font-size:.95rem}
.pager a.disabled{opacity:.4;pointer-events:none}

/* ---------- home ---------- */
.hero{background:linear-gradient(135deg,var(--accent),var(--accent-ink));color:#fff;
  border-radius:16px;padding:46px 44px;box-shadow:var(--shadow);margin-bottom:30px}
.hero h1{margin:0 0 10px;font-size:2rem;letter-spacing:-.5px}
.hero p{margin:0;opacity:.92;max-width:640px}
.hero .meta{margin-top:18px;display:flex;gap:26px;flex-wrap:wrap;font-size:.85rem;opacity:.9}
.hero .meta b{font-size:1.4rem;display:block}
.hero-ed{display:inline-block;background:rgba(255,255,255,.18);color:#fff;font-weight:700;
  font-size:.74rem;letter-spacing:.06em;padding:3px 12px;border-radius:20px;margin-bottom:12px}
.hero-switch{display:inline-block;margin-top:18px;color:#fff;font-weight:600;font-size:.88rem;
  border:1px solid rgba(255,255,255,.5);border-radius:10px;padding:8px 15px}
.hero-switch:hover{background:rgba(255,255,255,.15);text-decoration:none}

/* nota de distinción entre ediciones (en el artículo) */
.ed-note{border-radius:10px;padding:10px 14px;margin:0 0 20px;font-size:.88rem;border:1px solid var(--line)}
.ed-note.ident{background:var(--accent-soft);color:var(--accent-ink)}
.ed-note.revised{background:#fff7e6;border-color:#f0d48a;color:#7a5a12}
.ed-note.only{background:var(--accent-soft);color:var(--accent-ink)}
.ed-note a{font-weight:600}
@media (prefers-color-scheme:dark){.ed-note.revised{background:#332a12;border-color:#5a4a1e;color:#e6c766}}
:root[data-theme=dark] .ed-note.revised{background:#332a12;border-color:#5a4a1e;color:#e6c766}
@media print{.ed-note,.ed-bar{display:none}}
.cap-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.cap-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden}
.cap-card>summary{list-style:none;cursor:pointer;padding:16px 18px;display:flex;gap:12px;align-items:center}
.cap-card>summary::-webkit-details-marker{display:none}
.cap-card .num{background:var(--accent);color:#fff;border-radius:8px;padding:4px 10px;font-weight:700;font-size:.85rem}
.cap-card .cap-t{font-weight:600}
.cap-card .cap-n{color:var(--muted);font-size:.78rem}
.cap-card ol{margin:0;border-top:1px solid var(--line);padding:8px 8px 14px 8px;list-style:none;counter-reset:a}
.cap-card ol li a{display:block;padding:7px 12px;border-radius:7px;font-size:.9rem;color:var(--ink)}
.cap-card ol li a:hover{background:var(--accent-soft);text-decoration:none}
.section-title{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);margin:34px 0 14px}

/* ---------- descargas ---------- */
.downloads{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px 22px;margin-bottom:8px}
.dl-head{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:space-between}
.dl-title{font-weight:700;font-size:1.05rem}
.dl-sub{color:var(--muted);font-size:.85rem;margin-top:2px}
.dl-all{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;
  border-radius:10px;padding:11px 18px;font-weight:600;font-size:.92rem;white-space:nowrap}
.dl-all:hover{background:var(--accent-ink);text-decoration:none}
.dl-all span{opacity:.8;font-weight:400;font-size:.82rem}
.dl-chapters{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}
.dl-chapters>summary{cursor:pointer;color:var(--accent);font-weight:600;font-size:.9rem;list-style:none}
.dl-chapters>summary::-webkit-details-marker{display:none}
.dl-chapters>summary::before{content:"▸ ";font-size:.8rem}
.dl-chapters[open]>summary::before{content:"▾ "}
.dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:8px;margin-top:12px}
.dl-chip{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--line);
  border-radius:9px;color:var(--ink);background:var(--bg)}
.dl-chip:hover{border-color:var(--accent);background:var(--accent-soft);text-decoration:none}
.dl-num{background:var(--accent);color:#fff;border-radius:6px;font-size:.7rem;font-weight:700;
  min-width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center}
.dl-name{flex:1;font-size:.85rem;line-height:1.25}
.dl-size{color:var(--muted);font-size:.75rem;white-space:nowrap}

.art-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px 14px;
  flex-wrap:wrap;margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.art-dl{white-space:nowrap;border:1px solid var(--line);border-radius:8px;padding:7px 13px;
  font-size:.82rem;font-weight:600;color:var(--accent);background:var(--accent-soft);
  display:inline-flex;align-items:center;gap:7px}
.art-dl:hover{background:var(--accent);color:#fff;text-decoration:none;border-color:var(--accent)}
.art-dl-sz{font-weight:400;opacity:.7;font-size:.76rem}
.art-dl:hover .art-dl-sz{opacity:.85}
@media print{.art-dl,.downloads{display:none}}

/* ---------- lightbox ---------- */
.lb{position:fixed;inset:0;background:rgba(6,12,20,.9);display:none;z-index:50;
  align-items:center;justify-content:center;padding:30px;flex-direction:column}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:78vh;border-radius:8px;background:#fff}
.lb .cap{color:#e8eff7;max-width:760px;margin-top:16px;font-size:.92rem;text-align:center;line-height:1.5}
.lb .close{position:absolute;top:18px;right:24px;color:#fff;font-size:1.8rem;cursor:pointer;
  background:none;border:none;line-height:1}
.lb .cap i{color:#8fccee}

/* ---------- search results ----------
   Van EN FLUJO dentro del sidebar (no flotando sobre el índice). Con búsqueda
   activa se oculta el índice (.nav) y se muestran los resultados en su lugar. */
.search-results{display:none;margin:0 8px 8px;background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.08);border-radius:10px;overflow:hidden}
.search-results.open{display:block}
body.searching .nav{display:none}
.search-results a{display:block;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.07);color:var(--sidebar-ink)}
.search-results a:last-child{border-bottom:0}
.search-results a:hover{background:rgba(255,255,255,.06);text-decoration:none}
.search-results .sr-cap{font-size:.68rem;color:var(--accent);text-transform:uppercase;letter-spacing:.08em}
.search-results .sr-t{font-weight:600;color:#fff;margin:1px 0}
.search-results .sr-x{font-size:.8rem;color:var(--sidebar-ink);margin-top:2px;line-height:1.4}
.search-results mark{background:var(--mark);color:#1a2230;border-radius:3px;padding:0 2px}
.search-info{padding:10px 14px;color:var(--sidebar-ink);font-size:.82rem;opacity:.8}

mark.hit{background:var(--mark);color:inherit}

@media (max-width:900px){
  .app{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-320px;width:min(300px,85vw);z-index:40;transition:left .25s;box-shadow:var(--shadow)}
  .sidebar.open{left:0}
  .menu-toggle{display:inline-flex}
  body.menu-open{overflow:hidden}
  /* 16px evita el auto-zoom de iOS al enfocar el campo de búsqueda */
  .search-wrap input{font-size:16px}
  .topbar{padding:10px 14px;gap:10px}
  .icon-btn{padding:8px 12px}
  .nav ol li a{padding:9px 12px 9px 22px}
  .content,.pager{padding-left:16px;padding-right:16px}
  .content{padding-top:22px}
  .article{padding:24px 18px}
  .article-toc{padding:0 16px}
  .hero{padding:30px 22px}
  .hero h1{font-size:1.55rem}
  .lb{padding:14px}
  .lb .close{top:8px;right:10px;padding:10px}
  .lb img{max-width:calc(100vw - 28px)}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:35;display:none}
  .scrim.open{display:block}
}
@media (max-width:560px){
  .pager{flex-direction:column;gap:10px}
  .art-dl{white-space:normal}
}