/* Limanitin — hoja de estilos principal */
:root{
  --blue:#1f5fbf; --blue-700:#174a96; --blue-50:#eaf1fc; --blue-100:#d6e4fa;
  --amber:#f2a900; --amber-50:#fff6dc;
  --green:#1d8a5a; --green-50:#e6f5ee; --red:#c0392b; --red-50:#fdecea;
  --ink:#16202e; --ink-2:#425066; --ink-3:#6b778a;
  --line:#e2e7ef; --bg:#f5f7fb; --card:#ffffff;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(22,32,46,.06),0 4px 14px rgba(22,32,46,.06);
  --wrap:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:17px;line-height:1.65;color:var(--ink);background:var(--bg)}
img,svg{max-width:100%}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--blue-700)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;background:#fff;padding:8px;z-index:99}

/* Barra superior */
.topbar{background:var(--ink);color:#c9d3e3;font-size:13px}
.topbar .wrap{display:flex;gap:16px;justify-content:space-between;align-items:center;min-height:34px}
.topbar a{color:#fff}

/* Cabecera */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:20px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:800;font-size:20px;letter-spacing:-.02em;white-space:nowrap}
.brand-mark{width:34px;height:34px;flex:none}
.brand small{display:block;font-size:11.5px;font-weight:600;color:var(--ink-3);letter-spacing:0;margin-top:-4px}
.nav{margin-left:auto}
.nav>ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.nav>ul>li{position:relative}
.nav>ul>li>a{display:block;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
.nav>ul>li>a:hover,.nav>ul>li:focus-within>a{background:var(--blue-50);color:var(--blue)}
.nav .sub{display:none;position:absolute;top:100%;left:0;min-width:270px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;list-style:none;margin:0}
.nav li:hover>.sub,.nav li:focus-within>.sub{display:block}
.nav .sub a{display:block;padding:8px 10px;border-radius:8px;color:var(--ink);text-decoration:none;font-size:14.5px}
.nav .sub a:hover{background:var(--blue-50);color:var(--blue)}
.search-btn,.menu-btn{border:1px solid var(--line);background:#fff;border-radius:10px;height:40px;min-width:40px;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;color:var(--ink);font:inherit;font-size:14px;padding:0 10px}
.menu-btn{display:none}
@media (max-width:980px){
  .nav{display:none;position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);max-height:calc(100vh - 66px);overflow:auto}
  .nav.open{display:block}
  .nav>ul{flex-direction:column;padding:8px 16px 16px}
  .nav .sub{display:block;position:static;box-shadow:none;border:0;padding:0 0 8px 12px;min-width:0}
  .menu-btn{display:inline-flex;margin-left:auto}
  .search-btn{order:3}
}

/* Buscador */
.search-panel{display:none;background:#fff;border-bottom:1px solid var(--line)}
.search-panel.open{display:block}
.search-box{position:relative;max-width:720px;margin:0 auto;padding:16px 0}
.search-box input,.hero-search input{width:100%;height:52px;border:2px solid var(--line);border-radius:12px;padding:0 16px 0 46px;font:inherit;font-size:16px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none' stroke='%236b778a' stroke-width='2'%3E%3Ccircle cx='9' cy='9' r='6'/%3E%3Cpath d='m14 14 4 4'/%3E%3C/svg%3E") 16px 50% no-repeat}
.search-box input:focus,.hero-search input:focus{outline:none;border-color:var(--blue)}
.results{list-style:none;margin:6px 0 0;padding:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);position:absolute;left:0;right:0;z-index:60;overflow:hidden}
.results:empty{display:none}
.results a{display:block;padding:10px 14px;text-decoration:none;color:var(--ink);border-top:1px solid var(--line)}
.results li:first-child a{border-top:0}
.results a:hover,.results a:focus{background:var(--blue-50)}
.results small{display:block;color:var(--ink-3);font-size:12.5px}

/* Hero portada */
.hero{background:linear-gradient(160deg,var(--blue) 0%,#2b74dc 55%,#3f8cf0 100%);color:#fff;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;bottom:-60px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),rgba(255,255,255,0) 70%)}
.hero .wrap{padding-top:56px;padding-bottom:56px;position:relative;z-index:1}
.hero h1{font-size:clamp(30px,4.6vw,48px);line-height:1.12;margin:0 0 14px;letter-spacing:-.025em;max-width:780px}
.hero p.lead{font-size:19px;margin:0 0 26px;max-width:660px;color:#e6eefc}
.hero-search{position:relative;max-width:640px}
.hero-search input{border-color:transparent;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.popular{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;align-items:center}
.popular span{font-size:14px;color:#dbe7fb;font-weight:600;margin-right:4px}
.chip{display:inline-block;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff;text-decoration:none;font-size:14px;border:1px solid rgba(255,255,255,.28)}
.chip:hover{background:#fff;color:var(--blue)}

/* Secciones portada */
.section{padding:44px 0 8px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px}
.section-head h2{font-size:clamp(23px,2.6vw,29px);margin:0;letter-spacing:-.02em;line-height:1.2}
.section-head p{margin:4px 0 0;color:var(--ink-2)}
.section-head .more{white-space:nowrap;font-weight:600;font-size:15px}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.card{display:flex;flex-direction:column;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 16px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .12s ease,border-color .12s ease}
.card:hover{transform:translateY(-2px);border-color:var(--blue-100);color:var(--ink)}
.card .ic{width:38px;height:38px;border-radius:10px;background:var(--blue-50);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;margin-bottom:4px}
.card strong{font-size:16.5px;line-height:1.3}
.card span{color:var(--ink-2);font-size:14.5px;line-height:1.5}
.card .go{margin-top:auto;padding-top:6px;color:var(--blue);font-weight:600;font-size:14px}
.state-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.state{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px}
.state b{display:inline-flex;width:34px;height:34px;border-radius:8px;background:var(--amber-50);color:#8a6100;align-items:center;justify-content:center;font-size:13px;flex:none}
.state:hover{border-color:var(--blue);color:var(--blue)}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;position:relative}
.steps li::before{content:counter(s);display:flex;width:28px;height:28px;border-radius:50%;background:var(--blue);color:#fff;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:8px}
.steps a{font-weight:700;text-decoration:none;color:var(--ink);line-height:1.3;display:block}
.steps a:hover{color:var(--blue)}
.steps span{display:block;font-size:13.5px;color:var(--ink-2);margin-top:4px;line-height:1.45}
.notice{background:#fff;border:1px solid var(--line);border-left:4px solid var(--amber);border-radius:12px;padding:18px 20px;color:var(--ink-2);font-size:15px;margin:40px 0}

/* Artículo */
.page{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:32px;padding-top:24px;padding-bottom:48px}
@media (max-width:980px){.page{grid-template-columns:1fr}.sidebar{order:2}}
.article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 36px 36px;min-width:0}
@media (max-width:640px){.article{padding:20px 18px 24px;border-radius:0;border-left:0;border-right:0;margin:0 -16px}}
.crumbs{font-size:13.5px;color:var(--ink-3);margin-bottom:12px}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:4px}
.crumbs li+li::before{content:"›";margin:0 6px;color:var(--ink-3)}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{color:var(--blue);text-decoration:underline}
.article h1{font-size:clamp(28px,3.4vw,38px);line-height:1.16;letter-spacing:-.025em;margin:0 0 12px}
.byline{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:14px;color:var(--ink-3);margin-bottom:20px}
.byline a{color:var(--ink-2)}
.answer{background:var(--blue-50);border:1px solid var(--blue-100);border-radius:12px;padding:16px 18px;margin:0 0 22px}
.answer p{margin:0}
.answer strong.lbl{display:block;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);margin-bottom:4px}
.toc{border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin:0 0 24px;background:#fbfcfe}
.toc summary{cursor:pointer;font-weight:700;font-size:15px}
.toc ol{margin:10px 0 4px;padding-left:20px;font-size:15px}
.toc li{margin:4px 0}
.prose h2{font-size:clamp(22px,2.4vw,27px);line-height:1.25;letter-spacing:-.015em;margin:36px 0 12px;scroll-margin-top:84px}
.prose h3{font-size:19.5px;line-height:1.3;margin:24px 0 8px;scroll-margin-top:84px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 18px}
.prose li{margin:5px 0}
.prose table{width:100%;border-collapse:collapse;margin:8px 0 20px;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
.prose th{background:#f3f6fb;font-weight:700}
.prose blockquote{margin:0 0 18px;padding:12px 16px;border-left:4px solid var(--amber);background:var(--amber-50);border-radius:0 10px 10px 0}
.prose blockquote p:last-child{margin:0}
.callout{border-radius:12px;padding:14px 16px;margin:0 0 18px;font-size:15.5px}
.callout.tip{background:var(--green-50);border:1px solid #bfe3d0}
.callout.warn{background:var(--red-50);border:1px solid #f3c5bf}

/* Anuncios: espacio reservado para evitar CLS */
.ad{margin:26px 0;min-height:280px;display:flex;align-items:center;justify-content:center;background:repeating-linear-gradient(135deg,#f6f8fb,#f6f8fb 10px,#f1f4f9 10px,#f1f4f9 20px);border:1px dashed #d3dae6;border-radius:12px;color:#9aa5b8;font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.sidebar .ad{min-height:600px}

/* Bloques de enlazado */
.box{border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:28px 0}
.box h2{font-size:19px;margin:0 0 10px;letter-spacing:-.01em}
.box ul{margin:0;padding-left:20px}
.box li{margin:6px 0}
.next{display:flex;gap:16px;align-items:center;background:linear-gradient(135deg,var(--blue),#2f7be3);color:#fff;border:0}
.next .k{font-size:12.5px;text-transform:uppercase;letter-spacing:.07em;color:#dbe7fb;font-weight:700}
.next a{color:#fff;font-weight:700;font-size:18px;text-decoration:none;display:block;margin-top:2px}
.next a:hover{text-decoration:underline}
.next .arrow{margin-left:auto;font-size:26px;line-height:1}
.state-box{background:var(--amber-50);border-color:#f3dd9b}
.hub{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin:8px 0 26px;padding:0;list-style:none}
.hub a{display:block;height:100%;border:1px solid var(--line);border-radius:10px;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;line-height:1.35;background:#fbfcfe}
.hub a:hover{border-color:var(--blue);color:var(--blue)}
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin-top:10px}
.related a{display:block;border:1px solid var(--line);border-radius:10px;padding:12px 14px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;line-height:1.35}
.related a:hover{border-color:var(--blue);color:var(--blue)}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:0 0 10px;background:#fff}
.faq summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:24px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:-2px;font-size:22px;color:var(--blue)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:10px 0 0}
.faq h3{font-size:inherit;display:inline;margin:0}
.sources{font-size:14.5px;color:var(--ink-2)}
.sources ul{padding-left:20px}
.author{display:flex;gap:14px;align-items:flex-start;border-top:1px solid var(--line);padding-top:20px;margin-top:28px;font-size:14.5px;color:var(--ink-2)}
.author .av{width:48px;height:48px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;flex:none}
.author strong{color:var(--ink)}
.disclaimer{font-size:13.5px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:14px;margin-top:20px}

/* Barra lateral */
.sidebar{display:flex;flex-direction:column;gap:18px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.side-card h2{font-size:16px;margin:0 0 10px}
.route{list-style:none;margin:0;padding:0;counter-reset:r}
.route li{counter-increment:r;margin:0}
.route a{display:flex;gap:10px;align-items:center;padding:8px 6px;border-radius:8px;text-decoration:none;color:var(--ink);font-size:14.5px;font-weight:600}
.route a::before{content:counter(r);width:24px;height:24px;border-radius:50%;background:var(--blue-50);color:var(--blue);display:inline-flex;align-items:center;justify-content:center;font-size:12.5px;flex:none}
.route a:hover{background:var(--blue-50)}
.route a.on{background:var(--blue);color:#fff}
.route a.on::before{background:#fff;color:var(--blue)}
.side-links{list-style:none;margin:0;padding:0}
.side-links li{border-top:1px solid var(--line)}
.side-links li:first-child{border-top:0}
.side-links a{display:block;padding:8px 0;text-decoration:none;font-size:14.5px;color:var(--ink)}
.side-links a:hover{color:var(--blue)}
.sticky{position:sticky;top:84px}

/* Test de práctica */
.quiz{border:2px solid var(--blue-100);border-radius:var(--radius);padding:22px;margin:8px 0 28px;background:#fbfdff}
.quiz-head{display:flex;justify-content:space-between;gap:12px;align-items:baseline;flex-wrap:wrap;margin-bottom:14px}
.quiz-head h2{margin:0;font-size:22px}
.quiz-head span{font-size:14px;color:var(--ink-3)}
.q{border-top:1px solid var(--line);padding:16px 0}
.q:first-of-type{border-top:0}
.q fieldset{border:0;margin:0;padding:0}
.q legend{font-weight:700;margin-bottom:10px;line-height:1.45;padding:0}
.q label{display:flex;gap:10px;align-items:flex-start;padding:9px 12px;border:1px solid var(--line);border-radius:10px;margin:6px 0;cursor:pointer;background:#fff;font-size:15.5px;line-height:1.45}
.q label:hover{border-color:var(--blue)}
.q input{margin-top:4px;accent-color:var(--blue)}
.q label.ok{border-color:var(--green);background:var(--green-50)}
.q label.bad{border-color:var(--red);background:var(--red-50)}
.q .why{display:none;font-size:14.5px;color:var(--ink-2);margin:8px 2px 0}
.q.done .why{display:block}
.quiz-foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 20px;border-radius:10px;border:0;background:var(--blue);color:#fff;font:inherit;font-weight:700;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--blue-700);color:#fff}
.btn.ghost{background:#fff;color:var(--blue);border:1px solid var(--blue-100)}
.score{font-weight:700}
.score-box{display:none;margin-top:14px;padding:14px 16px;border-radius:12px;background:var(--green-50);border:1px solid #bfe3d0}
.score-box.show{display:block}

/* Pie */
.site-footer{background:#0f1b2d;color:#aeb9cc;margin-top:24px;font-size:14.5px}
.site-footer .wrap{padding-top:44px;padding-bottom:28px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
@media (max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
.site-footer h2{font-size:14px;color:#fff;text-transform:uppercase;letter-spacing:.06em;margin:0 0 12px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:7px 0}
.site-footer a{color:#d3dcea;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer .brand{color:#fff}
.site-footer .brand small{color:#8fa0bb}
.foot-legal{border-top:1px solid #23334c;margin-top:30px;padding-top:18px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#8796ae}
.static-page .article{max-width:820px}
.after{margin-top:12px;border-top:1px solid #bfe3d0;padding-top:12px}
.after-k{margin:0 0 8px;font-weight:700;font-size:14px}
.after-links{display:flex;flex-wrap:wrap;gap:8px}
.after-links .btn{height:40px;font-size:15px}
.qa-list{padding-left:24px}
.qa-list li{margin:0 0 18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.qa-q{margin:0 0 4px}
.qa-a{margin:0 0 4px;color:var(--green)}
.qa-why{margin:0;color:var(--ink-2);font-size:15.5px}
.sign-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin:8px 0 22px}
.sign{border:1px solid var(--line);border-radius:10px;padding:12px;background:#fbfcfe;font-size:14.5px}
.sign b{display:block;margin-bottom:2px}