:root{--bg:#f7f6f3;--card:#fff;--ink:#16181d;--muted:#5d6470;--line:#e3e1dc;--accent:#c8281e;--accent-ink:#fff;--soft:#fbeeec;--ok:#1f7a3f;--no:#b3261e;--r:12px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Helvetica Neue",Arial,"PingFang TC","Microsoft JhengHei","Noto Sans TC","Noto Sans Arabic","Noto Sans Devanagari",sans-serif;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#121316;--card:#1b1d22;--ink:#ecebe8;--muted:#a3a8b1;--line:#2c2f36;--accent:#ff5a47;--accent-ink:#16181d;--soft:#2a1b19;--ok:#5fd18a;--no:#ff8a80;color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.6}
[lang|=ar] body,[dir=rtl] body{line-height:1.8}
[lang|=hi] body{line-height:1.75}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
img,svg{max-width:100%}
.wrap{max-width:1400px;margin:0 auto;padding-inline:16px}

/* Cabecera */
.top{background:var(--card);border-block-end:1px solid var(--line);position:relative;z-index:20}
.top .bar1{display:flex;align-items:center;gap:14px;min-height:58px}
.top .bar2{border-block-start:1px solid var(--line)}
.logo{flex:none;display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.2rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo svg{width:28px;height:28px}
.nav{display:flex;gap:2px 20px;overflow-x:auto;scrollbar-width:none;padding-block:2px}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--ink);text-decoration:none;font-size:.9rem;padding:9px 0;white-space:nowrap;border-block-end:2px solid transparent}
.nav a:hover,.nav a[aria-current]{color:var(--accent);border-color:var(--accent)}
.hsearch{position:relative;flex:1;max-width:420px;margin-inline-start:auto}
.hsearch input{width:100%;font:inherit;font-size:.92rem;padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--ink)}
.hsearch input:focus{outline:0;border-color:var(--accent)}
.qres{position:absolute;inset-inline:0;top:calc(100% + 6px);list-style:none;margin:0;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.12);z-index:50;max-height:70vh;overflow:auto}
.qres a{display:flex;justify-content:space-between;gap:10px;padding:8px 10px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:.9rem}
.qres a span{color:var(--muted);font-size:.78rem;white-space:nowrap}
.qres a.on,.qres a:hover{background:var(--soft)}
.qres .none{padding:8px 10px;color:var(--muted);font-size:.88rem}
.langbar{display:flex;gap:2px;flex:none}
.langbar a{font-size:.78rem;line-height:1;padding:6px 7px;border-radius:6px;color:var(--muted);text-decoration:none;white-space:nowrap}
.langbar a:hover{color:var(--ink);background:var(--bg)}
.langbar a[aria-current]{color:var(--accent);font-weight:700}
@media (max-width:760px){.top .bar1{flex-wrap:wrap;gap:6px 10px;padding-block:8px}.logo{font-size:1.05rem}.langbar{margin-inline-start:auto}.hsearch{order:3;flex-basis:100%;max-width:none}
 .cards{grid-template-columns:1fr 1fr;gap:8px}.cards a{padding:12px}.cards strong{font-size:.92rem}.cards span{display:none}h2{font-size:1.15rem}}

/* Anuncios */
.ad-top{max-width:970px;margin:12px auto 0;min-height:100px;display:flex;align-items:center;justify-content:center;padding-inline:16px}
.ad-top>*{width:100%}
.ad-mid{display:none;margin:18px 0}
@media (max-width:760px){.ad-top{display:none}.ad-mid{display:block;min-height:100px}}
.ad-ph{border:1px dashed var(--line);border-radius:8px;color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;display:flex;align-items:center;justify-content:center;min-height:90px}
.side .ad-ph{min-height:600px}
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;max-width:1400px;margin:0 auto;padding:20px 16px 48px}
.side{display:none}
.side .sticky{position:sticky;top:16px}
@media (min-width:1100px){.layout{grid-template-columns:minmax(0,1fr) 300px}.side.right{display:block}}
@media (min-width:1360px){.layout{grid-template-columns:160px minmax(0,1fr) 300px}.side.left{display:block}}
main{min-width:0;max-width:820px;width:100%;justify-self:center}

/* Contenido */
.crumbs{font-size:.85rem;color:var(--muted);margin-block-end:8px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(1.6rem,4vw,2.3rem);line-height:1.2;margin:0 0 8px;letter-spacing:-.02em}
h2{font-size:1.3rem;margin:32px 0 10px;line-height:1.3}
h3{font-size:1.05rem;margin:20px 0 6px}
.lead{color:var(--muted);font-size:1.05rem;margin:0 0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.calc-card{padding:22px}
form.calc .row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin-block-end:14px}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field[hidden]{display:none}
.field label{font-size:.88rem;font-weight:600}
.field small{color:var(--muted);font-size:.8rem;line-height:1.4}
.inp{display:flex;align-items:stretch;border:1px solid var(--line);border-radius:10px;background:var(--bg);overflow:hidden}
.inp:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}
.inp input{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font:inherit;font-size:1rem;padding:10px 12px;outline:0;direction:ltr;text-align:start}
[dir=rtl] .inp input{text-align:right}
.unit[hidden]{display:none}
.unit{display:flex;align-items:center;padding-inline:10px;color:var(--muted);font-size:.88rem;border-inline-start:1px solid var(--line);background:var(--card);direction:ltr;white-space:nowrap}
select{font:inherit;font-size:.95rem;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:var(--bg);color:var(--ink);width:100%;min-width:0}
select:focus{outline:0;border-color:var(--accent)}
input[type=date]{font:inherit;border:1px solid var(--line);border-radius:10px;padding:9px 12px;background:var(--bg);color:var(--ink);width:100%}
.chk label{display:flex;align-items:center;gap:8px;font-weight:500;min-height:44px;cursor:pointer}
.chk input,.item input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent)}
.netbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;background:var(--soft);border-radius:10px;margin-block-end:16px}
.netbar label{font-size:.85rem;font-weight:700}
.netbar select{width:auto;flex:1;min-width:220px;background:var(--card)}
.items{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:8px 18px;margin-block-end:14px}
.item{display:flex;align-items:center;justify-content:space-between;gap:10px;border-block-end:1px solid var(--line);padding-block:6px}
.item label{display:flex;align-items:center;gap:8px;font-size:.92rem;cursor:pointer}
.inp.sm{width:110px;flex:none}
.inp.sm input{padding:6px 8px}
.pct{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-block:12px;border-block-end:1px solid var(--line)}
.pct p{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.in-inline{width:96px;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);direction:ltr}
.pctr{font-weight:800;font-size:1.15rem;color:var(--accent)}

/* Resultados */
.result{margin-block-start:6px}
.result:empty{display:none}
.res{margin:0;display:grid;gap:0;border-block-start:2px solid var(--ink)}
.res>div{display:flex;justify-content:space-between;gap:16px;padding:10px 2px;border-block-end:1px solid var(--line);flex-wrap:wrap}
.res dt{color:var(--muted)}
.res dd{margin:0;font-weight:600;text-align:end;font-variant-numeric:tabular-nums;unicode-bidi:plaintext}
[dir=rtl] .res dd{text-align:left}
[dir=rtl] .pctr,[dir=rtl] .note{unicode-bidi:plaintext}
.res .main{background:var(--soft);padding:14px 12px;border-radius:0 0 8px 8px;border:0}
.res .main dt{color:var(--ink);font-weight:700}
.res .main dd{color:var(--accent);font-size:1.3rem;font-weight:800}
.note{font-size:.85rem;color:var(--muted);margin:10px 0 0}
.msg{background:var(--soft);padding:10px 12px;border-radius:8px;margin:0}
.tbl{overflow-x:auto;margin-block-start:14px}
table{border-collapse:collapse;width:100%;font-size:.9rem;font-variant-numeric:tabular-nums}
th,td{padding:7px 10px;border-block-end:1px solid var(--line);text-align:end;white-space:nowrap}
th:first-child,td:first-child{text-align:start}
th{font-size:.8rem;color:var(--muted);font-weight:700}
.explain p,.explain li{max-width:70ch}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--card);border:1px solid var(--line);border-inline-start:4px solid var(--accent);border-radius:8px;padding:12px 14px;direction:ltr;text-align:left;overflow-x:auto;font-size:.95rem}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:0 16px;margin-block-end:8px}
.faq summary{cursor:pointer;font-weight:650;padding:14px 0;list-style-position:outside}
.faq details p{margin:0 0 14px}

/* Compartir */
.share{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:18px 0 0}
.share span{font-size:.85rem;color:var(--muted);margin-inline-end:4px}
.share a,.share button{font:inherit;font-size:.85rem;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);text-decoration:none;cursor:pointer}
.share a:hover,.share button:hover{border-color:var(--accent);color:var(--accent)}

/* Listados */
.hero{padding:26px 0 8px}
.search{width:100%;max-width:520px;font:inherit;padding:12px 16px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--ink);margin:10px 0 6px}
.cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.cards li[hidden]{display:none}
.cards a{display:block;height:100%;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;text-decoration:none;color:var(--ink);transition:border-color .15s,transform .15s}
.cards a:hover{border-color:var(--accent);transform:translateY(-1px)}
.cards strong{display:block;font-size:1rem;line-height:1.3;margin-block-end:4px}
.cards span{font-size:.85rem;color:var(--muted);line-height:1.4;display:block}
.legal h2{font-size:1.1rem}
.legal p,.legal li{max-width:75ch}
.langpick{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:24px 0}
.langpick a{display:block;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:var(--card);text-decoration:none;color:var(--ink)}
.langpick a.suggest{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent)}
.langpick strong{display:block;font-size:1.2rem}
.langpick span{color:var(--muted);font-size:.9rem}

/* Pie */
.foot{border-block-start:1px solid var(--line);background:var(--card);font-size:.88rem;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;padding-block:22px;align-items:center}
.foot a,.foot button{color:var(--muted);background:none;border:0;padding:0;font:inherit;cursor:pointer;text-decoration:underline}
.foot .copy{margin-inline-start:auto}
/* Nuevos elementos */
.byline{font-size:.82rem;color:var(--muted);margin:0 0 8px}
.subh{font-size:1rem;margin:26px 0 10px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.hsec{margin-block-end:8px}
details.adv{border:1px dashed var(--line);border-radius:10px;padding:0 14px;margin-block-end:14px}
details.adv>summary{cursor:pointer;font-size:.9rem;font-weight:650;color:var(--muted);padding:12px 0;list-style-position:inside}
details.adv[open]>summary{color:var(--ink)}
details.adv .row{margin-block:6px 14px}
.inp.bad,.in-inline.bad{border-color:var(--no);box-shadow:0 0 0 3px color-mix(in srgb,var(--no) 18%,transparent)}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-block-start:14px}
.btn{font:inherit;font-size:.88rem;padding:8px 14px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);cursor:pointer}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.sm{padding:4px 10px;font-size:.8rem}
.sticky-res{position:fixed;inset-inline:0;bottom:0;z-index:30;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:var(--ink);color:var(--card);font-size:.9rem;box-shadow:0 -6px 20px rgba(0,0,0,.18);cursor:pointer}
.sticky-res[hidden]{display:none}
.sticky-res strong{color:#fff;font-size:1.05rem;text-align:end;unicode-bidi:plaintext}
@media (prefers-color-scheme:dark){.sticky-res{background:#2c2f36;color:#ecebe8}}
.pwlist{list-style:none;padding:0;margin:0 0 14px;display:grid;gap:6px}
.pwlist li{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.pwlist code{font-size:1.02rem;word-break:break-all;direction:ltr;unicode-bidi:isolate}
.calc-card>.btn{margin-block-end:12px}
.fcats{display:flex;flex-wrap:wrap;gap:6px 18px;width:100%;padding-block-end:4px;border-block-end:1px solid var(--line)}
.fcats a{font-weight:600}
.rootpick{max-width:900px;margin:40px auto;padding:16px}
.langbar.big a{font-size:1rem;padding:10px 14px;color:var(--ink)}
@media print{.top,.ad-top,.ad-mid,.side,.share,.foot,.related,.explain,.faq,.actions,.sticky-res,.calc-card>.btn{display:none!important}details.adv{border:0}details.adv>summary{display:none}details.adv>*{display:block}body{background:#fff}.card{border:0;padding:0}main{max-width:none}}
@media (max-width:760px){.cards{grid-template-columns:1fr 1fr;gap:8px}.cards a{padding:12px}.cards strong{font-size:.92rem}.cards span{display:none}.lead{font-size:1rem}}
@media (max-width:760px){.calc-card{padding:16px}}

/* Compartir resultado, aviso y valoración */
.actions,.nudge{position:relative}
.btn svg{vertical-align:-3px;margin-inline-end:6px}
.shpop{position:absolute;z-index:40;min-width:190px;display:flex;flex-direction:column;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.14)}
.shpop a,.shpop button{font:inherit;font-size:.9rem;text-align:start;padding:8px 12px;border:0;border-radius:8px;background:none;color:var(--ink);text-decoration:none;cursor:pointer}
.shpop a:hover,.shpop a:focus,.shpop button:hover,.shpop button:focus{background:var(--soft);color:var(--accent);outline:0}
.nudge{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-block-start:14px;padding:10px 12px;border-radius:10px;background:var(--soft);font-size:.92rem}
.nudge span{flex:1;min-width:180px}
.nudge .x{border:0;background:none;color:var(--muted);font-size:1.3rem;line-height:1;cursor:pointer;padding:2px 6px}
.nudge .x:hover{color:var(--ink)}
.nudge[hidden],.fb[hidden],.fbrow[hidden],.fbform[hidden],.fbt[hidden]{display:none}
.fb{margin-block-start:14px;padding-block-start:12px;border-block-start:1px solid var(--line);font-size:.9rem;color:var(--muted)}
.fbrow{display:flex;align-items:center;gap:6px}
.fbrow span{margin-inline-end:4px}
.fbb{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:999px;background:var(--card);color:var(--muted);cursor:pointer}
.fbb:hover{border-color:var(--accent);color:var(--accent)}
.fbb.down svg{transform:scaleY(-1)}
.fbform{display:flex;flex-direction:column;gap:8px}
.fbform label{color:var(--ink)}
.fbform textarea{font:inherit;font-size:.92rem;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);resize:vertical}
.fbform textarea:focus{outline:0;border-color:var(--accent)}
.fbbtns{display:flex;gap:8px}
.fbt{margin:0;color:var(--ok);font-weight:600}
@media print{.nudge,.fb,.shpop{display:none!important}}
/* Sin anuncios (páginas legales o "ads": false): columna central única y centrada */
.layout:has(>main:only-child){grid-template-columns:minmax(0,1fr);max-width:960px}