/* Layout: columna editorial de 1120px, cabecera fija blanca, tarjetas solo donde hay acción (exámenes, preguntas). Paleta de brainer.es sobre blanco. */
:root{
  --paper:#FFFFFF;
  --ink:#1B1E2E;
  --navy:#1B1E36;
  --plum:#7A3B69;
  --gold:#D9A441;
  --teal:#3E6E67;
  --cream:#F5F3EC;
  --muted:#5C5F66;
  --line:#E7E4DC;
  --line-strong:#CFCABD;
  --soft:#FAF9F5;
  --ok:#3E6E67;
  --ok-bg:#EAF2F0;
  --ko:#A3402F;
  --ko-bg:#F8ECE8;
  --gold-bg:#FBF3E2;
  --plum-bg:#F5ECF2;
  --on-dark:#F5F3EC;
  --on-dark-muted:#C9CAD9;
  /* Una sola familia en toda la web, la misma que brainer.es */
  --f-display:"Plus Jakarta Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --f-body:"Plus Jakarta Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --f-mono:"Plus Jakarta Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --r:10px;
  --wrap:1120px;
  color-scheme:light;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
img{max-width:100%}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--paper)}
a{color:var(--navy);text-decoration-color:var(--gold);text-underline-offset:3px}
a:hover{color:var(--plum)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--f-display);color:var(--navy);text-wrap:balance;font-weight:700;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2rem,4.6vw,3.35rem);line-height:1.08}
h2{font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.15}
h3{font-size:1.2rem;line-height:1.3}
p{margin:0}
.eyebrow{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--plum);font-weight:500}
.lede{font-family:var(--f-display);font-size:clamp(1.1rem,1.8vw,1.28rem);line-height:1.6;color:var(--ink);font-weight:400}
.muted{color:var(--muted)}
.mono{font-family:var(--f-mono)}
.tnum{font-variant-numeric:tabular-nums}

/* Header */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:20px;height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);flex-shrink:0}
.brand-mark{width:34px;height:34px;flex-shrink:0}
.brand-name{font-family:var(--f-display);font-weight:600;font-size:1.22rem;letter-spacing:-.01em;line-height:1}
.brand-name small{display:block;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:400;margin-top:4px}
.nav{display:flex;gap:2px;margin-left:auto;align-items:center}
.nav a{padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:.93rem;font-weight:500;white-space:nowrap}
.nav a:hover{background:var(--soft);color:var(--navy)}
.nav a[aria-current="page"]{color:var(--plum)}
.nav .nav-cta{background:var(--navy);color:var(--on-dark);margin-left:8px}
.nav .nav-cta:hover{background:var(--plum);color:#fff}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer}
@media (max-width:900px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;background:var(--paper);border-bottom:1px solid var(--line);padding:8px max(16px,env(safe-area-inset-right,0px)) 16px max(16px,env(safe-area-inset-left,0px));gap:2px;box-shadow:0 12px 24px -16px rgba(27,30,54,.25)}
  .nav.open{display:flex}
  .nav a{padding:12px 10px;font-size:1rem}
  .nav .nav-cta{margin:8px 0 0;text-align:center}
}

/* Buttons & chips */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:999px;border:1px solid transparent;font-weight:600;font-size:.95rem;text-decoration:none;cursor:pointer;transition:background .15s,color .15s,border-color .15s;line-height:1.2;min-height:44px}
.btn-primary{background:var(--navy);color:var(--on-dark)}
.btn-primary:hover{background:var(--plum);color:#fff}
.btn-gold{background:var(--gold);color:var(--navy)}
.btn-gold:hover{background:#C99332;color:var(--navy)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--navy)}
.btn-ghost:hover{border-color:var(--navy);color:var(--navy);background:var(--soft)}
.btn-sm{padding:8px 14px;min-height:36px;font-size:.86rem}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.chip{display:inline-flex;align-items:center;gap:6px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;padding:4px 9px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:var(--paper);white-space:nowrap;font-weight:500}
.chip-live{color:var(--teal);border-color:#BFD6D1;background:var(--ok-bg)}
.chip-soon{color:var(--muted);background:var(--soft)}
.chip-bas{color:var(--navy);border-color:#C9CBD9}
.chip-esp{color:var(--plum);border-color:#DEC3D6;background:var(--plum-bg)}
.chip-gold{color:#8A6418;border-color:#EBD3A0;background:var(--gold-bg)}

main{min-height:60vh}
section{padding-block:clamp(48px,7vw,88px)}
.sec-head{display:grid;gap:12px;max-width:720px;margin-bottom:36px}

/* Hero */
.hero{padding-block:clamp(40px,6vw,72px) clamp(40px,6vw,72px);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(28px,5vw,64px);align-items:center}
.hero-copy{display:grid;gap:22px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:12px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-family:var(--f-mono);font-size:.74rem;color:var(--muted);letter-spacing:.04em}
.hero-meta span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--gold);margin-right:8px;vertical-align:middle}
@media (max-width:880px){.hero-grid{grid-template-columns:1fr}}

/* Sample question (hero) */
.qdemo{border:1px solid var(--line);border-radius:16px;padding:22px;background:var(--paper);box-shadow:0 24px 48px -32px rgba(27,30,54,.35);display:grid;gap:14px;min-width:0}
.qdemo-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.qdemo h3{font-family:var(--f-body);font-size:1.02rem;font-weight:600;color:var(--ink);line-height:1.45}

/* Options */
.opts{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.opt{display:flex;gap:12px;align-items:flex-start;width:100%;text-align:left;padding:13px 14px;border:1.5px solid var(--line);border-radius:var(--r);background:var(--paper);cursor:pointer;transition:border-color .12s,background .12s;line-height:1.45;font-size:.97rem}
.opt:hover{border-color:var(--line-strong);background:var(--soft)}
.opt .k{flex-shrink:0;width:26px;height:26px;border-radius:7px;border:1.5px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-size:.78rem;font-weight:500;color:var(--muted);margin-top:-1px}
.opt.sel{border-color:var(--navy);background:#F3F3F8}
.opt.sel .k{background:var(--navy);border-color:var(--navy);color:var(--on-dark)}
.opt.ok{border-color:var(--ok);background:var(--ok-bg)}
.opt.ok .k{background:var(--ok);border-color:var(--ok);color:#fff}
.opt.ko{border-color:var(--ko);background:var(--ko-bg)}
.opt.ko .k{background:var(--ko);border-color:var(--ko);color:#fff}
.opt[disabled]{cursor:default}
.opt[disabled]:hover{background:inherit}
.opt.ok[disabled]:hover{background:var(--ok-bg)}
.opt.ko[disabled]:hover{background:var(--ko-bg)}

/* Literal quote */
.cita{border-left:3px solid var(--gold);padding:4px 0 4px 16px;display:grid;gap:6px}
.cita-ref{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--plum);font-weight:500}
.cita blockquote{margin:0;font-family:var(--f-display);font-style:italic;font-size:1.02rem;line-height:1.55;color:var(--navy)}
.cita-src{font-size:.78rem;color:var(--muted)}
.tabla-cita{overflow-x:auto}
.tabla-cita table{border-collapse:collapse;font-family:var(--f-mono);font-size:.82rem;color:var(--navy);min-width:420px}
.tabla-cita th,.tabla-cita td{border:1px solid var(--line);padding:6px 10px;text-align:left}
.tabla-cita th{background:var(--soft);font-weight:500}
.tabla-cita tr.hl td{background:var(--gold-bg)}

/* Figures strip */
.figs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.fig{padding:22px 18px;display:grid;gap:4px;border-left:1px solid var(--line)}
.fig:first-child{border-left:0}
.fig b{font-family:var(--f-display);font-size:2rem;font-weight:600;color:var(--navy);line-height:1}
.fig span{font-size:.86rem;color:var(--muted);line-height:1.4}
@media (max-width:760px){.figs{grid-template-columns:repeat(2,minmax(0,1fr))}.fig:nth-child(3){border-left:0}.fig:nth-child(n+3){border-top:1px solid var(--line)}}

/* Feature list */
.feat{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.feat-item{padding:26px 24px 28px 0;border-bottom:1px solid var(--line);display:grid;gap:10px;align-content:start}
.feat-item:not(:nth-child(3n+1)){padding-left:24px;border-left:1px solid var(--line)}
.feat-item h3{font-size:1.15rem}
.feat-item p{color:var(--muted);font-size:.95rem}
.feat-item a.more{font-weight:600;font-size:.92rem;text-decoration:none}
@media (max-width:880px){.feat{grid-template-columns:1fr}.feat-item,.feat-item:not(:nth-child(3n+1)){padding:22px 0;border-left:0}}

/* Path section (dark) */
.dark{background:var(--navy);color:var(--on-dark)}
.dark h2,.dark h3{color:var(--on-dark)}
.dark .eyebrow{color:#9CC3BC}
.dark .lede{color:var(--on-dark)}
.dark p{color:var(--on-dark-muted)}
.vias{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;background:rgba(245,243,236,.14);border:1px solid rgba(245,243,236,.14);border-radius:14px;overflow:hidden;margin-top:36px}
.via{background:var(--navy);padding:22px 18px;display:grid;gap:10px;align-content:start}
.via .l{font-family:var(--f-mono);color:var(--gold);font-size:.8rem}
.via h3{font-family:var(--f-body);font-size:.98rem;font-weight:600;line-height:1.35}
.via p{font-size:.86rem;line-height:1.5}
@media (max-width:980px){.vias{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.vias{grid-template-columns:1fr}}
.cats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.cat{border:1px solid rgba(245,243,236,.18);border-radius:14px;padding:22px;display:grid;gap:10px}
.cat ul{margin:0;padding-left:18px;color:var(--on-dark-muted);font-size:.9rem;display:grid;gap:4px}
@media (max-width:760px){.cats{grid-template-columns:1fr}}
.dark .cita blockquote{color:var(--on-dark)}
.dark .cita-ref{color:#E7C27A}

/* Exams hub */
.page-head{padding-block:clamp(36px,5vw,64px) 28px;border-bottom:1px solid var(--line)}
.page-head .lede{max-width:760px;margin-top:14px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-top:26px}
.tab{padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--paper);cursor:pointer;font-weight:600;font-size:.9rem;color:var(--muted)}
.tab[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:var(--on-dark)}
.hub{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;padding-block:36px 72px}
@media (max-width:960px){.hub{grid-template-columns:1fr}}
.bloque{border-top:1px solid var(--line);padding-block:26px}
.bloque:first-child{border-top:0;padding-top:0}
.bloque-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap;margin-bottom:16px}
.bloque-head h2{font-size:1.4rem}
.bloque-head .rng{font-family:var(--f-mono);font-size:.78rem;color:var(--muted);margin-top:4px}
.exam-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (max-width:640px){.exam-list{grid-template-columns:1fr}}
.exam-card{border:1px solid var(--line);border-radius:12px;padding:16px 16px 14px;display:grid;gap:8px;background:var(--paper);text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s;min-width:0;cursor:pointer;text-align:left;width:100%}
.exam-card:hover{border-color:var(--navy);box-shadow:0 10px 24px -18px rgba(27,30,54,.45);color:inherit}
.exam-card .ec-top{display:flex;justify-content:space-between;gap:10px;align-items:center}
.exam-card .ec-art{font-family:var(--f-mono);font-size:.72rem;color:var(--plum);letter-spacing:.06em;text-transform:uppercase}
.exam-card h3{font-family:var(--f-body);font-size:1rem;font-weight:600;color:var(--navy);line-height:1.35}
.exam-card .ec-foot{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:.82rem;color:var(--muted);margin-top:2px}
.score-pill{font-family:var(--f-mono);font-size:.74rem;padding:2px 8px;border-radius:999px;background:var(--soft);color:var(--muted)}
.score-pill.good{background:var(--ok-bg);color:var(--ok)}
.score-pill.bad{background:var(--ko-bg);color:var(--ko)}
.itc-grid{display:flex;flex-wrap:wrap;gap:8px}
.itc{display:inline-flex;align-items:center;gap:8px;border:1px dashed var(--line-strong);border-radius:10px;padding:8px 11px;font-size:.84rem;color:var(--muted);background:var(--soft);min-width:0}
.itc b{font-family:var(--f-mono);font-weight:500;color:var(--navy);font-size:.78rem}
.itc .esp{width:7px;height:7px;border-radius:50%;background:var(--plum);flex-shrink:0}
.aside{display:grid;gap:18px;align-content:start;position:sticky;top:calc(env(safe-area-inset-top,0px) + 90px)}
@media (max-width:960px){.aside{position:static}}
.panel{border:1px solid var(--line);border-radius:14px;padding:20px;display:grid;gap:12px;background:var(--paper)}
.panel h3{font-size:1.08rem}
.panel p{font-size:.9rem;color:var(--muted)}
.seg{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px}
.seg button{flex:1;border:0;background:none;padding:7px 8px;border-radius:999px;cursor:pointer;font-weight:600;font-size:.86rem;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--navy);color:var(--on-dark)}
.switch{display:flex;align-items:flex-start;gap:10px;font-size:.88rem;line-height:1.4;cursor:pointer}
.switch input{margin-top:3px;accent-color:var(--navy);width:16px;height:16px;flex-shrink:0}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:.8rem;color:var(--muted);align-items:center}
.legend i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--plum);margin-right:6px}

/* Exam player */
.player{padding-block:24px 120px}
.pl-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.pl-head h1{font-size:clamp(1.35rem,2.6vw,1.8rem)}
.bar{height:6px;background:var(--line);border-radius:999px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--gold);border-radius:999px;transition:width .2s}
.pl-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:32px;margin-top:22px;align-items:start}
@media (max-width:900px){.pl-grid{grid-template-columns:1fr}}
.qcard{display:grid;gap:18px;min-width:0}
.qnum{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.qtext{font-family:var(--f-display);font-size:clamp(1.2rem,2.2vw,1.5rem);line-height:1.38;color:var(--navy);font-weight:500;text-wrap:pretty}
.flag-btn{background:none;border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:.82rem;cursor:pointer;color:var(--muted);display:inline-flex;gap:6px;align-items:center}
.flag-btn[aria-pressed="true"]{border-color:var(--gold);background:var(--gold-bg);color:#8A6418}
.qmap{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}
.qmap button{aspect-ratio:1;border:1px solid var(--line);background:var(--paper);border-radius:8px;cursor:pointer;font-family:var(--f-mono);font-size:.8rem;color:var(--muted);position:relative;max-width:100%}
.qmap button.ans{background:var(--navy);border-color:var(--navy);color:var(--on-dark)}
.qmap button.cur{outline:2px solid var(--gold);outline-offset:1px}
.qmap button.flag::after{content:"";position:absolute;top:3px;right:3px;width:6px;height:6px;border-radius:50%;background:var(--gold)}
.qmap button.r-ok{background:var(--ok-bg);border-color:var(--ok);color:var(--ok)}
.qmap button.r-ko{background:var(--ko-bg);border-color:var(--ko);color:var(--ko)}
.pl-foot{position:fixed;left:0;right:0;bottom:0;z-index:40;background:rgba(255,255,255,.97);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px)}
.pl-foot .wrap{display:flex;gap:10px;align-items:center;justify-content:space-between;padding-block:12px}
.pl-foot .count{font-size:.86rem;color:var(--muted)}
.feedback{border-radius:12px;padding:16px;display:grid;gap:12px}
.feedback.ok{background:var(--ok-bg)}
.feedback.ko{background:var(--ko-bg)}
.feedback .verdict{font-weight:700}
.feedback.ok .verdict{color:var(--ok)}
.feedback.ko .verdict{color:var(--ko)}
.kbd-hint{font-size:.78rem;color:var(--muted)}
.kbd-hint kbd{font-family:var(--f-mono);font-size:.72rem;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;padding:0 5px;background:var(--soft)}
@media (max-width:700px){.kbd-hint{display:none}}

/* Results */
.res-top{display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(20px,4vw,48px);align-items:center;padding-block:28px;border-bottom:1px solid var(--line)}
@media (max-width:640px){.res-top{grid-template-columns:1fr}}
.nota{font-family:var(--f-display);font-weight:600;font-size:clamp(4rem,10vw,6.5rem);line-height:.9;color:var(--navy);letter-spacing:-.03em}
.nota small{font-size:.32em;color:var(--muted);font-weight:400;letter-spacing:0}
.res-stats{display:flex;gap:10px;flex-wrap:wrap}
.stat{border:1px solid var(--line);border-radius:12px;padding:10px 14px;min-width:96px}
.stat b{display:block;font-family:var(--f-display);font-size:1.5rem;color:var(--navy);line-height:1.1}
.stat span{font-size:.8rem;color:var(--muted)}
.stat.ok b{color:var(--ok)}
.stat.ko b{color:var(--ko)}
.verdict-line{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.review{display:grid;gap:0}
.rv{border-bottom:1px solid var(--line);padding-block:26px;display:grid;gap:14px;min-width:0}
.rv-head{display:flex;gap:10px;align-items:baseline;justify-content:space-between;flex-wrap:wrap}
.rv-q{font-family:var(--f-display);font-size:1.15rem;color:var(--navy);line-height:1.4;font-weight:500}
.rv-exp{font-size:.95rem;line-height:1.6;color:var(--ink)}
.rv-exp b{color:var(--navy)}

/* Prose pages */
.prose{max-width:720px;padding-block:36px 80px;display:grid;gap:16px}
.prose h2{font-size:1.45rem;margin-top:18px}
.prose h3{font-size:1.1rem;margin-top:8px}
.prose p,.prose li{font-size:1rem;line-height:1.7}
.prose ul,.prose ol{margin:0;padding-left:22px;display:grid;gap:6px}
.prose table{border-collapse:collapse;width:100%;font-size:.88rem}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--soft)}
.tbl{overflow-x:auto}
.pend{background:var(--gold-bg);border-bottom:1px dashed var(--gold);padding:0 3px;border-radius:3px}
.note{border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:14px 16px;font-size:.9rem;color:var(--muted)}

/* About */
.about{display:grid;grid-template-columns:240px minmax(0,1fr);gap:clamp(24px,5vw,56px);padding-block:40px 80px;align-items:start}
@media (max-width:760px){.about{grid-template-columns:1fr}}
.portrait{aspect-ratio:4/5;border-radius:14px;background:linear-gradient(160deg,var(--cream),#E9E4D6);display:flex;align-items:flex-end;justify-content:flex-start;padding:14px;max-width:100%;border:1px solid var(--line)}
.portrait span{font-family:var(--f-mono);font-size:.7rem;color:var(--muted);letter-spacing:.06em}

/* Forms */
.form{display:grid;gap:16px;max-width:620px}
.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:.9rem;color:var(--navy)}
.field input,.field textarea,.field select{font:inherit;font-size:16px;padding:11px 13px;border:1px solid var(--line-strong);border-radius:10px;background:var(--paper);color:var(--ink);width:100%}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{outline:2px solid var(--gold);outline-offset:0;border-color:var(--gold)}
.field .help{font-size:.8rem;color:var(--muted)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.contact-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:48px;padding-block:36px 80px}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(96px + env(safe-area-inset-bottom,0px));background:var(--navy);color:var(--on-dark);padding:12px 18px;border-radius:12px;font-size:.92rem;z-index:90;box-shadow:0 12px 30px -12px rgba(0,0,0,.4);max-width:calc(100% - 32px)}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding-block:48px 28px;margin-top:0}
.ft-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px}
@media (max-width:820px){.ft-grid{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.ft-grid{grid-template-columns:1fr}}
.ft-grid h4{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--plum);margin:0 0 10px;font-weight:500}
.ft-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:7px;font-size:.92rem}
.ft-grid a{text-decoration:none;color:var(--ink)}
.ft-grid a:hover{color:var(--plum)}
.ft-legal{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;font-size:.8rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.linklike{background:none;border:0;padding:0;color:var(--ink);cursor:pointer;font-size:inherit;text-align:left}
.linklike:hover{color:var(--plum)}

/* Back to top */
.totop{position:fixed;right:calc(18px + env(safe-area-inset-right,0px));bottom:calc(18px + env(safe-area-inset-bottom,0px));width:44px;height:44px;border-radius:50%;background:var(--navy);color:var(--on-dark);border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:45;box-shadow:0 8px 20px -10px rgba(27,30,54,.6)}
.totop.lift{bottom:calc(84px + env(safe-area-inset-bottom,0px))}

/* Cookie banner */
.cookie{position:fixed;left:0;right:0;bottom:0;z-index:80;background:var(--paper);border-top:1px solid var(--line);box-shadow:0 -14px 30px -24px rgba(27,30,54,.5);padding-bottom:env(safe-area-inset-bottom,0px)}
.cookie .wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px 28px;align-items:center;padding-block:18px}
.cookie p{font-size:.9rem;color:var(--ink)}
.cookie .cb-actions{display:flex;gap:8px;flex-wrap:wrap}
@media (max-width:760px){.cookie .wrap{grid-template-columns:1fr}.cookie .cb-actions .btn{flex:1}}
.cookie-cfg{display:grid;gap:10px;grid-column:1/-1;border-top:1px solid var(--line);padding-top:14px}

/* Modal */
.modal-bg{position:fixed;inset:0;background:rgba(27,30,46,.45);z-index:95;display:flex;align-items:center;justify-content:center;padding:16px}
.modal{background:var(--paper);border-radius:16px;max-width:520px;width:100%;padding:24px;display:grid;gap:14px;box-shadow:0 30px 60px -20px rgba(0,0,0,.4);max-height:calc(100% - 32px);overflow:auto}
.modal.wide{max-width:780px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap}

/* Admin */
.adm{padding-block:28px 80px}
.adm-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.adm-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);overflow-x:auto;margin-bottom:24px}
.adm-tabs button{border:0;background:none;padding:12px 14px;font-weight:600;font-size:.92rem;color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;white-space:nowrap}
.adm-tabs button[aria-selected="true"]{color:var(--navy);border-bottom-color:var(--gold)}
.adm-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
@media (max-width:760px){.adm-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.adm-table{width:100%;border-collapse:collapse;font-size:.9rem}
.adm-table th{text-align:left;font-family:var(--f-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500;padding:8px 10px;border-bottom:1px solid var(--line)}
.adm-table td{padding:11px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.adm-table tr:hover td{background:var(--soft)}
.adm-row-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.adm-filter{display:flex;gap:10px;flex-wrap:wrap;align-items:end;margin-bottom:16px}
.adm-filter .field{min-width:220px;flex:1}
.opt-edit{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:center}
.opt-edit input[type=radio]{width:18px;height:18px;accent-color:var(--teal)}
.editor-tb{display:flex;gap:4px;flex-wrap:wrap;border:1px solid var(--line-strong);border-bottom:0;border-radius:10px 10px 0 0;padding:6px;background:var(--soft)}
.editor-tb button{border:1px solid transparent;background:none;border-radius:6px;padding:4px 9px;cursor:pointer;font-size:.85rem;font-weight:600;color:var(--navy)}
.editor-tb button:hover{border-color:var(--line-strong);background:var(--paper)}
.editor{border:1px solid var(--line-strong);border-radius:0 0 10px 10px;padding:16px;min-height:260px;background:var(--paper)}
.editor:focus{outline:2px solid var(--gold);outline-offset:0}
.demo-banner{background:var(--gold-bg);border:1px solid #EBD3A0;color:#6E5014;border-radius:12px;padding:12px 14px;font-size:.88rem}
.empty{border:1px dashed var(--line-strong);border-radius:12px;padding:28px;text-align:center;color:var(--muted)}

/* ---- Añadidos versión PHP ---- */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--navy);color:#fff;padding:10px 14px;border-radius:0 0 8px 0}
.skip:focus{left:0}
.nav .nav-login{border:1px solid var(--line-strong);margin-left:8px}
@media (max-width:900px){.nav .nav-login{margin:8px 0 0;text-align:center}}
.flash{margin-top:18px;border-radius:12px;padding:12px 16px;font-size:.92rem;border:1px solid var(--line)}
.flash-ok{background:var(--ok-bg);border-color:#BFD6D1;color:var(--ok)}
.flash-error{background:var(--ko-bg);border-color:#E9C3BA;color:var(--ko)}
.flash-info{background:var(--gold-bg);border-color:#EBD3A0;color:#6E5014}
.lock{display:inline-flex;align-items:center;gap:5px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:999px;background:var(--plum-bg);color:var(--plum);border:1px solid #DEC3D6}
.timer{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-mono);font-size:1rem;font-weight:500;padding:7px 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--navy);font-variant-numeric:tabular-nums}
.timer.warn{border-color:var(--gold);background:var(--gold-bg);color:#8A6418}
.timer.crit{border-color:var(--ko);background:var(--ko-bg);color:var(--ko)}
.timer.over{border-color:var(--ko);background:var(--ko);color:#fff}
.timer svg{flex-shrink:0}
.intro-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
@media (max-width:720px){.intro-grid{grid-template-columns:1fr}}
.part{border:1px solid var(--line);border-radius:14px;padding:20px;display:grid;gap:10px;align-content:start}
.part .num{font-family:var(--f-display);font-size:2.4rem;line-height:1;color:var(--navy);font-weight:600}
.practico-datos{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.practico-datos ul{margin:0;padding-left:20px;display:grid;gap:4px}
.apartado{border-top:1px solid var(--line);padding-block:18px;display:grid;gap:10px}
.apartado-in{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.apartado-in input{font:inherit;font-size:16px;padding:10px 12px;border:1px solid var(--line-strong);border-radius:10px;width:170px;font-variant-numeric:tabular-nums}
.apartado-in .u{font-family:var(--f-mono);color:var(--muted)}
.apartado.ok input{border-color:var(--ok);background:var(--ok-bg)}
.apartado.ko input{border-color:var(--ko);background:var(--ko-bg)}
.resolucion{border-left:3px solid var(--teal);padding-left:16px;display:grid;gap:8px}
.resolucion p,.resolucion li{font-size:.95rem}
.formula{font-family:var(--f-mono);background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:8px 12px;overflow-x:auto;white-space:nowrap;font-size:.9rem}
.part-result{border:1px solid var(--line);border-radius:16px;padding:20px;display:grid;gap:12px}
.part-result .nota{font-size:clamp(3rem,7vw,4.5rem)}
.res-parts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-block:24px}
@media (max-width:720px){.res-parts{grid-template-columns:1fr}}
/* Artículos */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:960px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.post-grid{grid-template-columns:1fr}}
.post-card{display:grid;gap:10px;align-content:start;text-decoration:none;color:inherit;min-width:0}
.post-card .img{aspect-ratio:16/10;border-radius:12px;overflow:hidden;background:var(--cream);border:1px solid var(--line);max-width:100%}
.post-card .img img{width:100%;height:100%;object-fit:cover;display:block}
.post-card h3{font-size:1.15rem}
.post-card p{color:var(--muted);font-size:.92rem}
.post-card:hover h3{color:var(--plum)}
.post-meta{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;color:var(--muted);text-transform:uppercase;display:flex;gap:12px;flex-wrap:wrap}
.filtros{display:flex;gap:10px;flex-wrap:wrap;align-items:end;margin-block:22px}
.filtros .field{min-width:180px;flex:1}
.article{max-width:760px;margin:0 auto;padding-block:36px 40px}
.article-head{display:grid;gap:14px;margin-bottom:26px}
.article-hero{border-radius:14px;overflow:hidden;margin-bottom:28px;border:1px solid var(--line);max-width:100%}
.article-hero img{display:block;width:100%;height:auto}
.contenido{font-size:1.04rem;line-height:1.75;display:grid;gap:16px;min-width:0}
.contenido h2{font-size:1.6rem;margin-top:16px}
.contenido h3{font-size:1.25rem;margin-top:10px}
.contenido img{max-width:100%;height:auto;border-radius:10px}
.contenido ul,.contenido ol{margin:0;padding-left:22px;display:grid;gap:6px}
.contenido table{border-collapse:collapse;width:100%;font-size:.92rem}
.contenido th,.contenido td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.contenido blockquote{margin:0;border-left:3px solid var(--gold);padding-left:16px;font-family:var(--f-display);font-style:italic;color:var(--navy)}
.contenido pre{overflow-x:auto;background:var(--soft);padding:12px;border-radius:8px}
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:36px}
.prevnext a{border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;display:grid;gap:4px;min-width:0}
.prevnext a:hover{border-color:var(--navy)}
.prevnext .dir{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.prevnext .next{text-align:right;grid-column:2}
@media (max-width:560px){.prevnext{grid-template-columns:1fr}.prevnext .next{grid-column:1}}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.tags a{font-size:.8rem;padding:3px 10px;border-radius:999px;background:var(--soft);border:1px solid var(--line);text-decoration:none;color:var(--muted)}
/* Comentarios */
.comentarios{border-top:1px solid var(--line);margin-top:44px;padding-top:30px;display:grid;gap:18px}
.coment{background:var(--soft);border-radius:12px;padding:14px 16px;display:grid;gap:6px}
.coment-h{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;font-size:.86rem}
/* Descargas */
.dl-list{display:grid;gap:10px}
.dl{display:flex;gap:14px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:12px;padding:14px 16px;flex-wrap:wrap}
.dl h3{font-family:var(--f-body);font-size:1rem;font-weight:600}
.dl p{font-size:.84rem;color:var(--muted)}
/* Cuenta */
.auth{max-width:460px;margin:0 auto;padding-block:48px 80px;display:grid;gap:18px}
.auth .form{max-width:none}
.cuenta-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;padding-block:32px 80px}
@media (max-width:900px){.cuenta-grid{grid-template-columns:1fr}}
.hist td,.hist th{font-size:.86rem}
.bars{display:grid;gap:8px}
.bar-row{display:grid;grid-template-columns:minmax(0,1fr) 120px 46px;gap:10px;align-items:center;font-size:.86rem}
.bar-row .track{height:8px;background:var(--line);border-radius:999px;overflow:hidden}
.bar-row .track i{display:block;height:100%;background:var(--teal);border-radius:999px}
.bar-row .track i.low{background:var(--ko)}
.rebt-txt{display:grid;grid-template-columns:280px minmax(0,1fr);gap:32px;padding-block:28px 80px}
@media (max-width:900px){.rebt-txt{grid-template-columns:1fr}}
.rebt-idx{max-height:75vh;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:10px;position:sticky;top:90px;font-size:.86rem}
@media (max-width:900px){.rebt-idx{position:static;max-height:300px}}
.rebt-idx a{display:block;padding:5px 8px;border-radius:6px;text-decoration:none;color:var(--ink)}
.rebt-idx a.on{background:var(--navy);color:var(--on-dark)}
.rebt-bloque p{margin:0 0 10px}
mark{background:var(--gold-bg);color:inherit;padding:0 2px;border-radius:3px}

.nav .nav-cta[aria-current="page"]{color:var(--on-dark);background:var(--plum)}
.nav .nav-login[aria-current="page"]{border-color:var(--plum)}
/* Migas y ficha de examen */
.migas{display:flex;flex-wrap:wrap;gap:6px;font-size:.84rem;color:var(--muted);align-items:center}
.migas a{color:var(--muted);text-decoration:none}
.migas a:hover{color:var(--plum)}
.migas span[aria-hidden]{color:var(--line-strong)}
.migas [aria-current]{color:var(--ink)}
.ficha-acciones{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.ficha-datos{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.ficha{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;padding-block:36px 80px}
@media (max-width:960px){.ficha{grid-template-columns:1fr}}
.ficha-preguntas{display:grid;gap:0;min-width:0;align-content:start;padding-block:0}
.ficha-preguntas>h2{margin-bottom:8px}
.ficha-preguntas>p.muted{margin-bottom:18px}
.fq{border-top:1px solid var(--line);padding-block:22px;display:grid;gap:12px;min-width:0}
.fq h3{font-family:var(--f-display);font-size:1.15rem;font-weight:500;line-height:1.4}
.fq-n{color:var(--plum);font-family:var(--f-mono);font-size:.9rem;margin-right:4px}
.fq-opts{margin:0;padding-left:34px;display:grid;gap:4px;color:var(--ink)}
.fq-opts li::marker{font-family:var(--f-mono);color:var(--muted)}
.fq-sol{border:1px solid var(--line);border-radius:12px;padding:0 16px;background:var(--soft)}
.fq-sol[open]{padding-bottom:16px}
.fq-sol summary{cursor:pointer;padding:12px 0;font-weight:600;color:var(--navy);list-style:none}
.fq-sol summary::-webkit-details-marker{display:none}
.fq-sol summary::before{content:"+";display:inline-block;width:18px;font-family:var(--f-mono);color:var(--plum)}
.fq-sol[open] summary::before{content:"–"}
.fq-sol>*+*{margin-top:10px}
.fq-ok{color:var(--ok)}
.fq-lock{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.ficha-cta{margin-top:30px;border-radius:16px;background:var(--navy);color:var(--on-dark);padding:26px;display:grid;gap:10px;justify-items:start}
.ficha-cta h2{color:var(--on-dark);font-size:1.5rem}
.ficha-cta p{color:var(--on-dark-muted)}
.ficha-lista{margin:0;padding:0;list-style:none;display:grid;gap:8px;font-size:.92rem}
.ficha-lista a{font-weight:600;text-decoration:none}

/* Ajustes para una única familia sans serif */
.eyebrow{letter-spacing:.1em;font-weight:600}
.qtext,.rv-q,.fq h3{font-weight:600;letter-spacing:-.01em}
.cita blockquote{font-style:normal}
.nota{font-weight:800}
.fq h3{text-wrap:pretty}