:root{
  --brand:#0E4D64;--brand-2:#13627F;--accent:#F4A259;--accent-ink:#8A4B0F;
  --bg:#FFFFFF;--bg-soft:#F4F7F9;--ink:#1B2631;--ink-2:#4A5866;--line:#E2E8EE;
  --ok-bg:#EAF6F1;--ok-line:#BFE3D3;--warn-bg:#FFF6EC;--warn-line:#F6D3AE;
  --radius:12px;--shadow:0 1px 2px rgba(16,40,60,.06),0 4px 14px rgba(16,40,60,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --brand:#5FB4D1;--brand-2:#7CC5DE;--accent:#F4A259;--accent-ink:#F7C08C;
  --bg:#0F171E;--bg-soft:#16212A;--ink:#E6EDF3;--ink-2:#A9B6C2;--line:#26343F;
  --ok-bg:#132A23;--ok-line:#24493C;--warn-bg:#2A2015;--warn-line:#4A3720;--shadow:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--font)}
a{color:var(--brand-2);text-underline-offset:2px}
a:hover{color:var(--brand)}
img,svg{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 16px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}

/* ---------- header ---------- */
.site-header{background:var(--bg);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.hdr{display:flex;align-items:center;gap:16px;min-height:64px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);font-size:1.18rem;font-weight:600;white-space:nowrap}
.logo b{color:var(--brand-2);font-weight:800}
.search{position:relative;flex:1;max-width:520px;display:flex}
.search input{flex:1;min-width:0;border:1px solid var(--line);background:var(--bg-soft);color:var(--ink);border-radius:999px 0 0 999px;padding:9px 14px;font:inherit;font-size:.95rem}
.search button{border:0;background:var(--brand);color:#fff;border-radius:0 999px 999px 0;padding:0 14px;cursor:pointer;font:inherit;font-weight:600}
.search-results{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);max-height:60vh;overflow:auto;z-index:30}
.search-results a{display:block;padding:10px 14px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--line);font-size:.95rem}
.search-results a:hover,.search-results a:focus{background:var(--bg-soft)}
.search-results small{display:block;color:var(--ink-2);font-size:.8rem}
.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:6px 12px;font:inherit}
.main-nav{background:var(--brand)}
.main-nav ul{list-style:none;display:flex;gap:2px;margin:0 auto;padding-top:0;padding-bottom:0;overflow-x:auto}
.main-nav a{display:block;color:#fff;text-decoration:none;padding:10px 14px;font-weight:600;font-size:.95rem;white-space:nowrap}
.main-nav a:hover,.main-nav a[aria-current]{background:rgba(255,255,255,.14)}
@media (prefers-color-scheme:dark){.main-nav{background:#0B3A4C}}
@media (max-width:760px){
  .hdr{flex-wrap:wrap;padding:8px 0}.search{order:3;max-width:none;flex-basis:100%}
  .menu-btn{display:block}.main-nav{display:none}.main-nav.open{display:block}
  .main-nav ul{flex-direction:column}.logo{font-size:1.05rem}
}

/* ---------- breadcrumb ---------- */
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:14px 0 0;margin:0;font-size:.85rem;color:var(--ink-2)}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--ink-2)}
.crumbs a{color:var(--ink-2)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;padding-bottom:40px}
@media (max-width:980px){.layout{grid-template-columns:1fr}}
.article{min-width:0;max-width:760px}
h1{font-size:clamp(1.65rem,3.2vw,2.3rem);line-height:1.2;margin:.5em 0 .3em;letter-spacing:-.01em}
h2{font-size:1.45rem;line-height:1.3;margin:1.8em 0 .5em;scroll-margin-top:120px}
h3{font-size:1.12rem;line-height:1.35;margin:1.4em 0 .4em}
p{margin:.6em 0 1em}
ul,ol{padding-left:1.3em}li{margin:.3em 0}
.meta-line{color:var(--ink-2);font-size:.86rem;margin-top:0}
.quick{background:var(--ok-bg);border:1px solid var(--ok-line);border-radius:var(--radius);padding:14px 18px;margin:16px 0}
.quick .q-h{margin:0 0 4px;font-weight:700;font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--brand)}
.quick p{margin:0}
.official{background:var(--warn-bg);border:1px solid var(--warn-line);border-radius:var(--radius);padding:14px 18px;margin:22px 0}
.official ul{list-style:none;padding:0;margin:6px 0;display:flex;flex-wrap:wrap;gap:8px}
.o-h{margin:0;font-weight:700;color:var(--accent-ink)}
.o-n{margin:6px 0 0;font-size:.84rem;color:var(--ink-2)}
.btn-official{display:inline-block;background:var(--brand);color:#fff!important;text-decoration:none;padding:9px 16px;border-radius:999px;font-weight:600;font-size:.95rem}
.toc{border:1px solid var(--line);border-radius:var(--radius);padding:10px 18px;margin:20px 0;background:var(--bg-soft)}
.toc summary{cursor:pointer;font-weight:700}
.toc ol{margin:8px 0 4px;font-size:.95rem}
.callout{border-left:4px solid var(--accent);background:var(--bg-soft);padding:10px 14px;border-radius:0 8px 8px 0}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.94rem;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--bg-soft)}
.steps{list-style:none;counter-reset:s;padding:0}
.steps>li{counter-increment:s;position:relative;padding:2px 0 6px 52px;margin:0 0 6px}
.steps>li::before{content:counter(s);position:absolute;left:0;top:14px;width:36px;height:36px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:grid;place-items:center}
.steps h3{margin-top:14px}
.note{background:var(--bg-soft);border:1px dashed var(--line);border-radius:10px;padding:10px 14px;font-size:.95rem}
.faq-item{border-bottom:1px solid var(--line);padding:4px 0 8px}
.faq-item h3{margin:1em 0 .3em}
.sources{font-size:.86rem;color:var(--ink-2);margin-top:28px}.src-h{font-weight:700;margin-bottom:0}
.disclaimer{font-size:.84rem;color:var(--ink-2);border-top:1px solid var(--line);padding-top:12px;margin-top:28px}

/* ---------- cards ---------- */
.grid3{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:12px 0 24px}
.card{display:flex;flex-direction:column;gap:4px;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--ink);background:var(--bg);box-shadow:var(--shadow);transition:transform .12s,border-color .12s}
.card:hover{transform:translateY(-2px);border-color:var(--brand-2);color:var(--ink)}
.c-silo{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--accent-ink)}
.c-title{font-weight:700;line-height:1.3}
.c-desc{font-size:.86rem;color:var(--ink-2);line-height:1.45}
.next-step{margin:30px 0 10px;padding:18px;border-radius:var(--radius);background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.ns-h{margin:0 0 10px;color:#fff;font-weight:800;font-size:1.1rem}
.ns-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:600px){.ns-grid{grid-template-columns:1fr}}
.card-next{box-shadow:none}
.rel-h{font-weight:800;font-size:1.1rem;margin:26px 0 4px}

/* ---------- sidebar ---------- */
.side{min-width:0}
.side-box{border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-top:20px}
.side-h{font-weight:800;margin:0 0 6px}
.side-list{list-style:none;padding:0;margin:0;font-size:.92rem}
.side-list li{border-bottom:1px solid var(--line);padding:6px 0;margin:0}
.side-list a{text-decoration:none;color:var(--ink)}.side-list a:hover{color:var(--brand-2)}
.side-all{display:block;margin-top:10px;font-size:.9rem;font-weight:600}
.side-sticky{position:sticky;top:130px;margin-top:20px}
@media (max-width:980px){.side-sticky{position:static}}

/* ---------- ads (espacio reservado contra CLS) ---------- */
.ad{margin:26px 0;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ad-side{min-height:600px}
.ad-label{font-size:.7rem;color:var(--ink-2);text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.ad-placeholder{min-height:0;margin:0}
.ad ins{width:100%}

/* ---------- home ---------- */
.hero{background:linear-gradient(160deg,#0E4D64 0%,#13627F 60%,#1B7A8F 100%);color:#fff;padding:46px 0 36px}
.hero h1{color:#fff;margin-top:0;max-width:820px}
.hero .lead{font-size:1.12rem;max-width:760px;opacity:.95}
.hero a{color:#fff}
.hero-search{max-width:680px;margin:18px 0}
.hero-search input{padding:14px 18px;font-size:1.02rem;background:#fff;color:#1B2631;border:0}
.hero-search button{background:var(--accent);color:#3A1D00;padding:0 22px;font-size:1rem}
.chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}
.chips-l{font-weight:700;font-size:.9rem;margin-right:4px}
.chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);color:#fff;text-decoration:none;padding:6px 12px;border-radius:999px;font-size:.88rem}
.chip:hover{background:rgba(255,255,255,.26);color:#fff}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:-22px;position:relative}
.stats>div{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);text-align:center}
.stats b{display:block;font-size:1.3rem;color:var(--brand-2)}.stats span{font-size:.85rem;color:var(--ink-2)}
@media (max-width:700px){.stats{grid-template-columns:1fr 1fr}}
.sec-h{font-size:1.5rem;margin:1.6em 0 .6em}
.silo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.silo-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:18px;border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;color:var(--ink);background:var(--bg-soft)}
.silo-card:hover{border-color:var(--brand-2);color:var(--ink)}
.s-ico{font-size:1.6rem}.s-t{font-weight:800;font-size:1.05rem}.s-n{font-size:.82rem;color:var(--ink-2)}
.how-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;counter-reset:h}
.how-grid li{counter-increment:h;border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 18px 64px;position:relative;margin:0}
.how-grid li::before{content:counter(h);position:absolute;left:16px;top:16px;width:36px;height:36px;border-radius:50%;background:var(--accent);color:#3A1D00;font-weight:800;display:grid;place-items:center}
@media (max-width:760px){.how-grid{grid-template-columns:1fr}}
.top-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.top-box{border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px}
.tb-h{display:flex;justify-content:space-between;align-items:baseline;gap:8px}
.tb-h h3{margin:0;font-size:1.05rem}.tb-h a{font-size:.85rem;white-space:nowrap}
.top-box ol{margin:8px 0 0;font-size:.95rem}
.home-content{max-width:860px;padding-bottom:30px}
.hub{padding-bottom:40px;max-width:1180px}
.hub>p,.hub section{max-width:820px}
.legal{max-width:820px;padding-bottom:40px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);margin-top:30px;padding:30px 0 10px;font-size:.9rem}
.f-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}
.f-h{font-size:.95rem;margin:0 0 6px}.f-h a{color:var(--ink);text-decoration:none}
.site-footer ul{list-style:none;padding:0;margin:0}.site-footer li{margin:4px 0}
.site-footer a{color:var(--ink-2)}
.f-note{border-top:1px solid var(--line);margin-top:20px;padding-top:12px;color:var(--ink-2);font-size:.84rem}

/* ---------- herramientas ---------- */
.tool{border:2px solid var(--brand-2);border-radius:var(--radius);padding:18px;margin:20px 0;background:var(--bg-soft)}
.tool label{display:block;font-weight:600;margin:8px 0 4px}
.tool input,.tool select,.tool textarea{width:100%;font:inherit;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
.tool .row{display:grid;grid-template-columns:1fr 110px 40px;gap:8px;margin:6px 0}
.tool button{font:inherit;font-weight:700;border:0;border-radius:999px;padding:10px 18px;background:var(--brand);color:#fff;cursor:pointer;margin:8px 8px 0 0}
.tool button.sec{background:transparent;color:var(--brand-2);border:1px solid var(--brand-2)}
.tool .out{margin-top:14px;font-size:1.05rem;background:var(--bg);border-radius:10px;padding:12px 14px;border:1px solid var(--line)}
.tool .big{font-size:2rem;font-weight:800;color:var(--brand-2)}
.q-item{border-bottom:1px solid var(--line);padding:10px 0}
.q-item p{margin:0 0 6px;font-weight:600}
.q-opts{display:flex;gap:6px;flex-wrap:wrap}
.q-opts label{display:inline-flex;align-items:center;gap:4px;font-weight:400;margin:0;border:1px solid var(--line);border-radius:999px;padding:4px 10px;background:var(--bg);cursor:pointer}
.q-opts input{width:auto}
.bar{height:12px;border-radius:6px;background:var(--line);overflow:hidden;margin:4px 0 10px}.bar>span{display:block;height:100%;background:var(--accent)}