/* =============================================================
   NucleoPC — hoja de estilos unica
   1. Tokens  2. Reset  3. Utilidades  4. Tipografia  5. Componentes
   6. Secciones  7. Efectos  8. Responsive  9. Reduced-motion
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root{
  --bg:#0a0c10;
  --bg-soft:#0d1016;
  --surface:#141822;
  --surface-2:#1b2029;
  --surface-3:#232935;
  --border:#262c3a;
  --border-soft:#1c212c;
  --text:#eef1f7;
  --text-dim:#9aa3b8;
  --text-faint:#6b7385;
  --accent:#4f8cff;
  --accent-ink:#04101f;
  --accent-soft:rgba(79,140,255,.14);
  --accent-2:#35d07f;
  --accent-2-soft:rgba(53,208,127,.14);
  --warn:#ffb020;
  --warn-soft:rgba(255,176,32,.14);
  --danger:#ff5470;
  --danger-soft:rgba(255,84,112,.14);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 10px 30px -12px rgba(0,0,0,.55);
  --shadow-sm:0 4px 14px -6px rgba(0,0,0,.4);
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --display:"Space Grotesk","Inter",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-soft:cubic-bezier(.25,.46,.45,.94);
  --nav-h:68px;
}

[data-theme="light"]{
  --bg:#f4f6fb;
  --bg-soft:#eef1f7;
  --surface:#ffffff;
  --surface-2:#f2f4f9;
  --surface-3:#e8ebf2;
  --border:#e0e4ee;
  --border-soft:#eaedf4;
  --text:#141822;
  --text-dim:#565f72;
  --text-faint:#8890a0;
  --accent:#2f6fe0;
  --accent-ink:#ffffff;
  --accent-soft:rgba(47,111,224,.09);
  --shadow:0 12px 30px -14px rgba(30,40,70,.18);
  --shadow-sm:0 4px 14px -8px rgba(30,40,70,.14);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*,*::before,*::after{box-sizing:border-box;margin:0;}
html{-webkit-text-size-adjust:100%;tab-size:2;overflow-x:clip;scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto;} }
body{
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
  overscroll-behavior-y:none;
  transition:background .25s var(--ease-out),color .25s var(--ease-out);
}
img,svg,video{display:block;max-width:100%;}
img{height:auto;}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;}
a{color:inherit;text-decoration:none;}
p{text-wrap:pretty;}
h1,h2,h3,h4{text-wrap:balance;line-height:1.1;letter-spacing:-.01em;font-family:var(--display);font-weight:600;}
ul,ol{list-style:none;padding:0;}
table{border-collapse:collapse;width:100%;}
input,select,textarea{font:inherit;color:inherit;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);}
::selection{background:var(--accent);color:#fff;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

.skip-link{position:fixed;top:-100px;left:1rem;padding:.6rem 1rem;background:var(--accent);color:#fff;z-index:9999;border-radius:8px;font-weight:600;transition:top .2s var(--ease-out);}
.skip-link:focus{top:1rem;}

/* icons: size EVERY inline-icon context explicitly (gotcha E.1) */
.ic{width:1.15em;height:1.15em;flex:none;stroke:currentColor;fill:none;stroke-width:2;vertical-align:-.2em;}
.ic-lg{width:1.6em;height:1.6em;}

/* =============================================================
   3. Utilidades
   ============================================================= */
.container{width:100%;max-width:1280px;margin-inline:auto;padding-inline:1.1rem;}
.container-wide{width:100%;max-width:1440px;margin-inline:auto;padding-inline:1.1rem;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.stack{display:flex;flex-direction:column;}
.row{display:flex;align-items:center;}
.wrap{flex-wrap:wrap;}
.gap-xs{gap:.4rem;} .gap-sm{gap:.7rem;} .gap-md{gap:1.2rem;} .gap-lg{gap:2rem;}
.section{padding-block:clamp(2.5rem,5vw,4.5rem);}
.section-tight{padding-block:clamp(1.5rem,3vw,2.5rem);}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);font-weight:600;}
.muted{color:var(--text-dim);}
.faint{color:var(--text-faint);}
.center{text-align:center;}
.grid{display:grid;gap:1.2rem;}
/* mobile-first: una columna por defecto, se ensanchan en los breakpoints (sección 8) */
.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
.grid-cards{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));}
.divider{height:1px;background:var(--border);border:0;margin-block:1.5rem;}
.pill{display:inline-flex;align-items:center;gap:.35rem;padding:.3rem .7rem;border-radius:99px;font-size:.78rem;font-weight:600;background:var(--surface-2);border:1px solid var(--border);color:var(--text-dim);}
.pill-accent{background:var(--accent-soft);color:var(--accent);border-color:transparent;}
.pill-offer{background:var(--accent-2-soft);color:var(--accent-2);border-color:transparent;}
.pill-warn{background:var(--warn-soft);color:var(--warn);border-color:transparent;}

/* =============================================================
   4. Tipografia
   ============================================================= */
h1{font-size:clamp(2rem,4.4vw,3.4rem);}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem);}
h3{font-size:clamp(1.15rem,1.8vw,1.45rem);}
.lead{font-size:clamp(1.02rem,1.6vw,1.2rem);color:var(--text-dim);max-width:60ch;}

/* =============================================================
   5. Componentes
   ============================================================= */

/* Botones */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.75rem 1.3rem;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;
  transition:transform .18s var(--ease-out),background .18s var(--ease-out),box-shadow .18s var(--ease-out),border-color .18s var(--ease-out);
  border:1px solid transparent;white-space:nowrap;
}
.btn:hover{transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-block{width:100%;}
.btn-sm{padding:.5rem .9rem;font-size:.85rem;}
.btn-primary{background:var(--accent-2);color:#04180d;box-shadow:0 8px 20px -8px rgba(53,208,127,.55);}
.btn-primary:hover{box-shadow:0 10px 26px -8px rgba(53,208,127,.7);}
.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border);}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent);}
.btn-ghost{background:transparent;color:var(--text-dim);border-color:var(--border);}
.btn-ghost:hover{color:var(--text);border-color:var(--text-dim);}
.btn-amazon{background:#ff9900;color:#111;box-shadow:0 8px 20px -8px rgba(255,153,0,.5);}
.btn-amazon:hover{box-shadow:0 10px 26px -8px rgba(255,153,0,.65);}
.btn[disabled]{opacity:.45;pointer-events:none;}

/* Header / nav */
.site-header{
  position:sticky;top:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--border-soft);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%;}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-weight:700;font-size:1.15rem;}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:grid;place-items:center;color:#04101f;font-weight:800;flex:none;}
.nav-links{display:flex;align-items:center;gap:1.6rem;}
.nav-links a{font-size:.92rem;font-weight:500;color:var(--text-dim);transition:color .18s var(--ease-out);}
.nav-links a:hover{color:var(--text);}
.nav-links a.nav-cta,.nav-links a.nav-cta:hover{
  color:var(--accent-ink);background:var(--accent);padding:.5rem .95rem;border-radius:99px;font-weight:700;
}
.nav-right{display:flex;align-items:center;gap:.7rem;}
.theme-toggle{
  width:38px;height:38px;border-radius:99px;background:var(--surface-2);border:1px solid var(--border);
  display:grid;place-items:center;transition:border-color .18s var(--ease-out);
}
.theme-toggle:hover{border-color:var(--accent);}
.theme-toggle svg{width:18px;height:18px;}
.nav-burger{display:none;width:38px;height:38px;border-radius:8px;background:var(--surface-2);border:1px solid var(--border);place-items:center;}
.nav-drawer{display:none;}

/* Banner / ad slots */
.ad-slot{
  border:1px dashed var(--border);border-radius:var(--radius);
  background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-faint);font-size:.78rem;font-family:var(--mono);letter-spacing:.04em;
  min-height:90px;
}
.ad-slot-header{margin-block:.9rem;min-height:70px;}
.ad-slot-sidebar{min-height:250px;}
.ad-slot-inline{margin-block:2rem;min-height:110px;}

/* Cards de producto */
.card-product{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .22s var(--ease-out),border-color .22s var(--ease-out),box-shadow .22s var(--ease-out);
}
.card-product:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow);}
.card-product .thumb{aspect-ratio:4/3;background:var(--surface-2);position:relative;overflow:hidden;}
.card-product .thumb img{width:100%;height:100%;object-fit:contain;padding:1rem;}
.card-product .badges{position:absolute;top:.6rem;left:.6rem;display:flex;gap:.4rem;flex-wrap:wrap;}
.card-product .body{padding:1rem 1.1rem 1.2rem;display:flex;flex-direction:column;gap:.5rem;flex:1;}
.card-product .cat{font-family:var(--mono);font-size:.72rem;color:var(--accent);text-transform:uppercase;letter-spacing:.04em;}
.card-product h3{font-size:1.02rem;line-height:1.3;}
.card-product .rating{display:flex;align-items:center;gap:.4rem;font-size:.82rem;color:var(--text-dim);}
.card-product .stars{color:var(--warn);}
.card-product .price-row{display:flex;align-items:baseline;gap:.5rem;margin-top:auto;padding-top:.4rem;}
.card-product .price{font-family:var(--mono);font-weight:700;font-size:1.2rem;}
.card-product .price-old{font-family:var(--mono);font-size:.85rem;color:var(--text-faint);text-decoration:line-through;}
.card-product .actions{display:flex;gap:.5rem;margin-top:.6rem;}

/* Ficha producto */
.ficha-head{display:grid;grid-template-columns:1fr;gap:2rem;align-items:start;}
.gallery{display:flex;flex-direction:column;gap:.6rem;}
.gallery-main{aspect-ratio:1/1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:grid;place-items:center;}
.gallery-main img{width:100%;height:100%;object-fit:contain;padding:1.4rem;}
.gallery-thumbs{display:flex;gap:.5rem;overflow-x:auto;overflow-y:visible;padding-block:.2rem;}
.gallery-thumbs button{width:64px;height:64px;flex:none;border-radius:8px;border:1px solid var(--border);background:var(--surface);overflow:hidden;padding:.35rem;}
.gallery-thumbs button.is-active{border-color:var(--accent);}
.gallery-thumbs img{width:100%;height:100%;object-fit:contain;}

.ficha-info h1{margin-bottom:.4rem;}
.ficha-brand{color:var(--text-dim);font-size:.95rem;margin-bottom:.6rem;}
.price-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;margin-block:1rem;}
.price-now{font-family:var(--mono);font-weight:800;font-size:2rem;}
.price-note{font-size:.78rem;color:var(--text-faint);margin-top:.3rem;}

.spec-table{width:100%;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);}
.spec-table .spec-group-title{background:var(--surface-2);padding:.6rem 1rem;font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);}
.spec-table table{width:100%;}
.spec-table tr{border-top:1px solid var(--border-soft);}
.spec-table td{padding:.65rem 1rem;font-size:.9rem;}
.spec-table td:first-child{color:var(--text-dim);width:45%;}
.spec-table td:last-child{font-family:var(--mono);font-weight:600;}

.radar-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;}
.radar-wrap svg{width:100%;height:auto;}
.radar-legend{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:.8rem;font-size:.8rem;}
.radar-legend .dot{width:10px;height:10px;border-radius:99px;display:inline-block;margin-right:.35rem;}

.pros-cons{display:grid;grid-template-columns:1fr;gap:1rem;}
.pros-cons .box{border-radius:var(--radius);padding:1.1rem;}
.pros-cons .pros{background:var(--accent-2-soft);}
.pros-cons .cons{background:var(--danger-soft);}
.pros-cons li{display:flex;gap:.5rem;align-items:flex-start;padding-block:.3rem;font-size:.92rem;}
.pros-cons .ic{margin-top:.15em;}

.review-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;}
.review-card .head{display:flex;justify-content:space-between;gap:.5rem;font-size:.85rem;color:var(--text-dim);margin-bottom:.4rem;}

/* Comparador */
.compare-picker{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;}
.compare-slots{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-top:1rem;}
.compare-slot{position:relative;border:1px dashed var(--border);border-radius:var(--radius);min-height:170px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;padding:1rem;text-align:center;overflow:visible;}
.compare-slot.filled{border-style:solid;background:var(--surface-2);}
.compare-slot .thumb-wrap{position:relative;width:72px;height:72px;}
.compare-slot .thumb{width:72px;height:72px;border-radius:8px;overflow:hidden;background:var(--surface);display:grid;place-items:center;}
.compare-slot .thumb img{width:100%;height:100%;object-fit:contain;padding:.4rem;}
.compare-slot .remove-badge{position:absolute;top:-8px;right:-8px;width:22px;height:22px;border-radius:99px;background:var(--danger);color:#fff;font-size:.8rem;display:grid;place-items:center;line-height:1;}
.compare-table-wrap{overflow-x:auto;margin-top:1.5rem;}
.compare-table{min-width:600px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.compare-table th,.compare-table td{padding:.7rem .9rem;border-top:1px solid var(--border-soft);font-size:.88rem;text-align:left;}
.compare-table thead th{background:var(--surface-2);position:sticky;top:0;}
.compare-table td.best{background:var(--accent-2-soft);color:var(--accent-2);font-weight:700;}
.compare-table .row-label{color:var(--text-dim);font-family:var(--mono);font-size:.8rem;white-space:nowrap;}
.compare-empty{padding:2rem;text-align:center;color:var(--text-dim);}

/* Configurador (PC Builder) */
.builder-grid{display:grid;grid-template-columns:1fr;gap:1.5rem;}
.builder-steps{display:flex;flex-direction:column;gap:.9rem;}
.builder-step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem;}
.builder-step .step-head{display:flex;align-items:center;justify-content:space-between;gap:.6rem;cursor:pointer;}
.builder-step .step-title{display:flex;align-items:center;gap:.7rem;font-weight:600;}
.step-num{width:28px;height:28px;border-radius:99px;background:var(--surface-3);display:grid;place-items:center;font-family:var(--mono);font-size:.85rem;flex:none;}
.builder-step.is-complete .step-num{background:var(--accent-2);color:#04180d;}
.builder-step .step-selected{font-size:.85rem;color:var(--text-dim);margin-top:.2rem;}
.builder-step .step-body{display:none;margin-top:1rem;}
.builder-step.is-open .step-body{display:block;}
.builder-options{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.8rem;max-height:420px;overflow-y:auto;padding-right:.3rem;}
.builder-option{border:1px solid var(--border);border-radius:var(--radius-sm);padding:.8rem;cursor:pointer;transition:border-color .18s,background .18s;}
.builder-option:hover{border-color:var(--accent);}
.builder-option.is-selected{border-color:var(--accent-2);background:var(--accent-2-soft);}
.builder-option img{width:100%;aspect-ratio:4/3;object-fit:contain;background:var(--surface-2);border-radius:6px;margin-bottom:.5rem;padding:.4rem;}
.builder-option .name{font-size:.86rem;font-weight:600;line-height:1.3;}
.builder-option .price{font-family:var(--mono);color:var(--accent);font-size:.85rem;margin-top:.3rem;}

.builder-summary{position:static;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.2rem;display:flex;flex-direction:column;gap:.9rem;height:fit-content;}
.summary-item{display:flex;justify-content:space-between;gap:.6rem;font-size:.88rem;padding-block:.4rem;border-bottom:1px solid var(--border-soft);}
.summary-item .empty{color:var(--text-faint);font-style:italic;}
.summary-total{display:flex;justify-content:space-between;align-items:baseline;font-size:1.3rem;font-weight:800;font-family:var(--mono);padding-top:.5rem;}
.compat-alert{border-radius:var(--radius-sm);padding:.7rem .9rem;font-size:.85rem;display:flex;gap:.55rem;align-items:flex-start;}
.compat-alert.warn{background:var(--warn-soft);color:var(--warn);}
.compat-alert.danger{background:var(--danger-soft);color:var(--danger);}
.compat-alert.ok{background:var(--accent-2-soft);color:var(--accent-2);}
.compat-list{display:flex;flex-direction:column;gap:.5rem;}

/* Hero */
.hero{padding-block:clamp(2.6rem,6vw,5rem);position:relative;overflow:visible;}
.hero-halo{position:absolute;inset:-30% -10% -60% -10%;background:radial-gradient(45% 40% at 50% 20%,var(--accent-soft),transparent 70%);filter:blur(60px);pointer-events:none;z-index:-1;}
.hero-content{max-width:760px;}
.hero-cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.6rem;}
.hero-stats{display:flex;gap:2rem;margin-top:2.2rem;flex-wrap:wrap;}
.hero-stat b{display:block;font-family:var(--mono);font-size:1.5rem;color:var(--accent);}
.hero-stat span{font-size:.82rem;color:var(--text-dim);}

/* Categorias en home */
.cat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem;display:flex;flex-direction:column;gap:.6rem;transition:border-color .2s,transform .2s;}
.cat-card:hover{border-color:var(--accent);transform:translateY(-3px);}
.cat-card .icon-wrap{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);}

/* Presupuestos preconfigurados */
.budget-card{background:linear-gradient(160deg,var(--surface),var(--surface-2));border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.4rem;display:flex;flex-direction:column;gap:.6rem;}
.budget-card .amount{font-family:var(--mono);font-size:1.6rem;font-weight:800;color:var(--accent-2);}

/* Guias / blog */
.guide-hero{padding-block:2rem;}
.guide-body{max-width:72ch;font-size:1.02rem;line-height:1.75;}
.guide-body h2{margin-top:2rem;margin-bottom:.8rem;}
.guide-body p{margin-bottom:1rem;color:var(--text-dim);}
.guide-shortlist{display:flex;flex-direction:column;gap:1rem;margin-block:1.5rem;}
.guide-item{display:flex;gap:1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;align-items:center;}
.guide-item .thumb{width:84px;height:84px;flex:none;background:var(--surface-2);border-radius:8px;display:grid;place-items:center;overflow:hidden;}
.guide-item .thumb img{width:100%;height:100%;object-fit:contain;padding:.4rem;}

/* Footer */
.site-footer{border-top:1px solid var(--border-soft);padding-block:2.5rem 1.5rem;margin-top:4rem;background:var(--bg-soft);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;}
.footer-col h4{font-size:.9rem;margin-bottom:.8rem;}
.footer-col a{display:block;font-size:.88rem;color:var(--text-dim);padding-block:.3rem;}
.footer-col a:hover{color:var(--text);}
.footer-disclosure{font-size:.8rem;color:var(--text-faint);max-width:80ch;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-soft);line-height:1.6;}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;margin-top:1.5rem;font-size:.82rem;color:var(--text-faint);}

/* Legal pages */
.legal-body{max-width:72ch;font-size:.98rem;line-height:1.75;color:var(--text-dim);}
.legal-body h2{color:var(--text);margin-top:1.8rem;margin-bottom:.6rem;font-size:1.2rem;}
.legal-body p{margin-bottom:1rem;}
.disclosure-banner{background:var(--accent-soft);border:1px solid var(--accent);color:var(--accent);border-radius:var(--radius);padding:.9rem 1.1rem;font-size:.85rem;margin-block:1.2rem;}

/* Filtros de categoria */
.filters-bar{display:flex;gap:.7rem;flex-wrap:wrap;align-items:center;margin-block:1.2rem 1.6rem;}
.filters-bar select{padding:.55rem .8rem;}

/* Ofertas */
.offer-badge{background:var(--danger);color:#fff;font-weight:700;}

/* =============================================================
   8. Responsive
   ============================================================= */
@media (min-width:540px){
  .grid-2,.grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:720px){
  .ficha-head{grid-template-columns:.9fr 1.1fr;}
  .pros-cons{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:repeat(3,1fr);}
  .grid-3{grid-template-columns:repeat(3,1fr);}
}
@media (min-width:960px){
  .grid-3{grid-template-columns:repeat(3,1fr);}
  .grid-4{grid-template-columns:repeat(4,1fr);}
  .builder-grid{grid-template-columns:2fr 1fr;}
  .builder-summary{position:sticky;top:calc(var(--nav-h) + 1rem);}
  .footer-grid{grid-template-columns:repeat(5,1fr);}
}
@media (max-width:959px){
  .nav-links{display:none;}
  .nav-burger{display:grid;}
  .nav-drawer.is-open{
    display:flex;flex-direction:column;position:fixed;inset:var(--nav-h) 0 0 0;
    background:var(--bg);z-index:99;padding:1.5rem;gap:.3rem;overflow-y:auto;
  }
  .nav-drawer.is-open a{padding:.9rem .3rem;font-size:1.05rem;border-bottom:1px solid var(--border-soft);}
}
@media (min-width:1280px){
  .grid-cards{grid-template-columns:repeat(auto-fill,minmax(270px,1fr));}
}

/* =============================================================
   9. Reduced-motion — solo lo intrusivo
   ============================================================= */
@media (prefers-reduced-motion:reduce){
  .hero-halo{animation:none;}
}

/* Entrada suave opcional — el contenido YA es visible por defecto (D.3);
   esto solo anima la transición si el JS llega a tiempo. Nunca opacity:0 solo. */
.fade-in-ready{opacity:.001;transform:translateY(8px);}
.fade-in-ready.fade-in-play{opacity:1;transform:none;transition:opacity .45s var(--ease-out),transform .45s var(--ease-out);}