/* CalculaTuDinero — identidad "grabado de billete": verde tinta, oro, rosetas guilloché.
   Capas: cabecera de cristal → hero oscuro tipo cámara acorazada → papel claro con contenido → pie oscuro. */
:root{
  --paper:#ffffff;--surface:#ffffff;--surface-2:#f5f8f6;--ink:#0f1f1a;--muted:#53645d;--line:#d9e2dd;
  --brand:#0d6b56;--brand-2:#0a5444;--brand-soft:#e1efe9;--gold:#a87a22;--gold-2:#e0b252;--gold-soft:#f7ecd3;
  --warn-bg:#fbf3e2;--vault:#0b2a22;--vault-2:#12392e;--vault-3:#1a4a3c;--vault-fg:#eaf3ee;--vault-muted:#a3c2b5;
  --shadow-1:0 1px 2px rgba(11,42,34,.06),0 8px 24px -8px rgba(11,42,34,.14);
  --shadow-2:0 2px 4px rgba(11,42,34,.06),0 24px 60px -20px rgba(11,42,34,.35);
  --f-display:"Bricolage Grotesque",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-body:"Instrument Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r-s:10px;--r-m:16px;--r-l:24px;
  --ease:cubic-bezier(.2,.8,.2,1);
  /* Zonas de fondo (cabecera, héroes, pie): blancas en modo claro */
  --head-bg:rgba(255,255,255,.86);--head-fg:#0f1f1a;--head-muted:#4c5d56;--head-line:#e3e9e5;--head-chip:#f5f8f6;--head-hover:#e9f3ee;
  --hero-bg:radial-gradient(900px 420px at 88% -20%,#e3f2eb,transparent 65%),radial-gradient(700px 380px at -10% 120%,#f6efdc,transparent 60%),#ffffff;
  --hero-fg:#0c1d17;--hero-muted:#4f6159;--chip-bg:#f1f7f4;--chip-line:#dbe7e1;--check:#0d6b56;
  --rosette:url(guilloche-green.svg);--rosette-op:.09;
  --foil:linear-gradient(100deg,#8a6219,#d29f3c 40%,#a87a22 60%,#7a5716);
  --foot-bg:#f5f8f6;--foot-fg:#0f1f1a;--foot-muted:#53645d;--foot-line:#e1e8e4;
  --scene-line:13,107,86;--scene-gold:168,122,34;--scene-dark:0;
}
:root[data-ctd-theme="dark"]{
  --paper:#0a1411;--surface:#111d19;--surface-2:#0e1916;--ink:#e6efea;--muted:#93a89f;--line:#22342e;
  --brand:#3fc49d;--brand-2:#74dbbb;--brand-soft:#123129;--gold:#e0b252;--gold-2:#f2cf7f;--gold-soft:#2c2412;
  --warn-bg:#2a2213;--vault:#06130f;--vault-2:#0c231d;--vault-3:#123129;--vault-fg:#e6f1ec;--vault-muted:#8fb3a5;
  --shadow-1:0 1px 2px rgba(0,0,0,.4);--shadow-2:0 24px 60px -20px rgba(0,0,0,.7);
  --head-bg:rgba(6,19,15,.82);--head-fg:#e6f1ec;--head-muted:#8fb3a5;--head-line:rgba(255,255,255,.08);--head-chip:rgba(255,255,255,.06);--head-hover:rgba(255,255,255,.08);
  --hero-bg:radial-gradient(1200px 500px at 85% -10%,#123129,transparent 60%),radial-gradient(800px 400px at -10% 120%,#0c231d,transparent 60%),#06130f;
  --hero-fg:#ffffff;--hero-muted:#8fb3a5;--chip-bg:rgba(255,255,255,.07);--chip-line:rgba(255,255,255,.12);--check:#f2cf7f;
  --rosette:url(guilloche.svg);--rosette-op:.13;
  --foil:linear-gradient(100deg,#f2cf7f,#fff3cf 45%,#f2cf7f 60%,#e0b252);
  --foot-bg:#06130f;--foot-fg:#ffffff;--foot-muted:#8fb3a5;--foot-line:rgba(255,255,255,.08);
  --scene-line:116,219,187;--scene-gold:224,178,82;--scene-dark:1;color-scheme:dark}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--brand);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
img,svg{max-width:100%}
:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;border-radius:6px}
.wrap{max-width:1140px;margin:0 auto;padding-left:max(18px,env(safe-area-inset-left,0px));padding-right:max(18px,env(safe-area-inset-right,0px))}
.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:var(--surface);padding:8px 12px;z-index:99}
h1,h2,h3{font-family:var(--f-display);text-wrap:balance;letter-spacing:-.02em;line-height:1.12}
h1{font-size:clamp(2.1rem,5.4vw,3.6rem);font-weight:800;margin:.2em 0 .25em}
h2{font-size:clamp(1.45rem,2.6vw,1.95rem);font-weight:700;margin:2.2em 0 .55em}
h3{font-size:1.18rem;font-weight:700;margin:1.6em 0 .4em}
.lead{font-size:clamp(1.05rem,1.6vw,1.22rem);line-height:1.55;max-width:62ch}

/* ---------- Cabecera ---------- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--vault) 82%,transparent);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid rgba(255,255,255,.08);color:var(--vault-fg)}
.header-inner{display:flex;align-items:center;gap:22px;min-height:64px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;font:800 1.16rem/1 var(--f-display);color:inherit;text-decoration:none;letter-spacing:-.02em}
.logo b{color:var(--gold-2);font-weight:800}
.logo-coin{display:inline-flex;perspective:400px}
.logo-coin img{display:block;border-radius:8px;transition:transform .8s var(--ease);box-shadow:0 0 0 1px rgba(255,255,255,.15)}
.logo:hover .logo-coin img{transform:rotateY(360deg)}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{color:var(--vault-muted);text-decoration:none;font-weight:600;font-size:.95rem;padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.header-tools{display:flex;gap:8px;align-items:center}
.currency select{font:600 .85rem var(--f-body);padding:7px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:var(--vault-fg);cursor:pointer}
.currency select option{color:#111;background:#fff}
.theme-btn{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:var(--vault-fg);display:grid;place-items:center;cursor:pointer;padding:0;transition:transform .5s var(--ease)}
.theme-btn:hover{transform:rotate(25deg)}
.theme-btn svg{width:18px;height:18px}
.theme-btn .i-sun{display:none}
:root[data-ctd-theme="dark"] .theme-btn .i-sun{display:block}:root[data-ctd-theme="dark"] .theme-btn .i-moon{display:none}
@media (max-width:720px){.main-nav{order:3;width:100%;margin:0 0 8px -12px;overflow-x:auto}.header-tools{margin-left:auto}.header-inner{gap:10px}}
.read-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;pointer-events:none}
.read-progress span{display:block;height:100%;width:100%;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--gold),var(--gold-2))}

/* ---------- Hero de página (oscuro, roseta 3D) ---------- */
.page-hero{position:relative;overflow:hidden;color:var(--vault-fg);background:
  radial-gradient(1200px 500px at 85% -10%,var(--vault-3),transparent 60%),
  radial-gradient(800px 400px at -10% 120%,var(--vault-2),transparent 60%),var(--vault);
  padding-block:20px 56px;isolation:isolate}
.page-hero::after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--gold-2),transparent);opacity:.5}
.hero-rosette,.footer-rosette{position:absolute;width:780px;height:780px;right:-200px;top:-260px;background:url(guilloche.svg) center/contain no-repeat;opacity:.13;z-index:-1;animation:spin 140s linear infinite;transform-style:preserve-3d}
.page-hero .hero-rosette{transform:perspective(900px) rotateX(55deg) rotateZ(0deg);animation-name:spin3d}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes spin3d{from{transform:perspective(900px) rotateX(58deg) rotateZ(0)}to{transform:perspective(900px) rotateX(58deg) rotateZ(360deg)}}
.page-hero h1{color:#fff;max-width:20ch}
.page-hero .lead{color:var(--vault-muted)}
.page-hero .lead strong{color:#fff}
.hero-row{display:flex;gap:26px;align-items:flex-start;margin-top:22px}
.hero-icon{flex:none;width:84px;height:84px;border-radius:24px;display:grid;place-items:center;color:var(--gold-2);background:linear-gradient(145deg,rgba(255,255,255,.12),rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.14);box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 20px 40px -18px rgba(0,0,0,.6);transform:perspective(500px) rotateX(12deg) rotateY(-16deg);animation:bob 6s ease-in-out infinite;margin-top:28px}
.hero-icon svg{width:44px;height:44px}
@keyframes bob{50%{transform:perspective(500px) rotateX(-6deg) rotateY(14deg) translateY(-6px)}}
@media (max-width:640px){.hero-icon{display:none}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font:700 .74rem/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2);margin:0}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor}
.crumbs ol{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-wrap:wrap;gap:6px;font-size:.84rem;color:var(--vault-muted)}
.crumbs li+li::before{content:"/";margin-right:6px;opacity:.5}
.crumbs a{color:var(--vault-muted);text-decoration:none}.crumbs a:hover{color:#fff}
.badges{list-style:none;padding:0;margin:20px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.badges li{font-size:.82rem;font-weight:600;padding:6px 12px 6px 28px;border-radius:999px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);position:relative}
.badges li::before{content:"";position:absolute;left:11px;top:50%;width:9px;height:5px;border:2px solid var(--gold-2);border-top:0;border-right:0;transform:translateY(-70%) rotate(-45deg)}
.byline{font-size:.9rem;color:var(--vault-muted);display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.byline a{color:#fff}

/* ---------- Layout de contenido ---------- */
.layout{display:block}
.layout.has-toc{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px}
@media (max-width:1000px){.layout.has-toc{grid-template-columns:1fr}.toc{order:-1}}
.content{padding-block:8px 28px;min-width:0}
.content>p,.content>ul,.content>ol{max-width:72ch}
.content li{margin:.3em 0}
.content li::marker{color:var(--brand);font-weight:700}
.toc{position:sticky;top:96px;align-self:start;margin-top:36px;padding:18px 20px;border-radius:var(--r-m);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1)}
.toc-title{font:700 .74rem/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:0 0 10px}
.toc ol{margin:0;padding-left:18px;font-size:.92rem}
.toc a{color:var(--muted);text-decoration:none}.toc a:hover,.toc a.on{color:var(--brand);font-weight:600}
@media (max-width:1000px){.toc{position:static;margin-top:28px}}
table{border-collapse:collapse;width:100%;font-size:.95rem;font-variant-numeric:tabular-nums}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:right}
th:first-child,td:first-child{text-align:left}
th{background:var(--surface-2);font:700 .8rem var(--f-body);letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
tbody tr{transition:background .15s}tbody tr:hover{background:var(--brand-soft)}
.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:var(--r-m);background:var(--surface);max-height:440px;box-shadow:var(--shadow-1)}
.table-scroll th{position:sticky;top:0;z-index:1}
.formula{background:var(--vault);color:var(--vault-fg);border-radius:var(--r-s);padding:14px 18px;font:500 1rem/1.6 ui-monospace,"SF Mono",Menlo,Consolas,monospace;overflow-x:auto;border-left:3px solid var(--gold-2)}
.tip{background:var(--gold-soft);border-radius:var(--r-m);padding:16px 20px;margin:20px 0;border:1px solid color-mix(in srgb,var(--gold) 30%,transparent)}

/* ---------- Calculadora ---------- */
.calc{position:relative;margin:-32px 0 36px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);border-radius:var(--r-l);background:var(--surface);box-shadow:var(--shadow-2);border:1px solid var(--line);overflow:hidden;z-index:2}
@media (max-width:860px){.calc{grid-template-columns:1fr}}
.calc form{display:grid;gap:18px;align-content:start;padding:28px}
@media (max-width:520px){.calc form{padding:20px}}
.field{display:grid;grid-template-columns:minmax(0,1fr) 150px;gap:6px 14px;align-items:center}
.field label,.field>.flabel{font-weight:600;font-size:.94rem;line-height:1.3}
.field .hint{display:block;font-size:.78rem;color:var(--muted);font-weight:400;margin-top:2px}
.field input:not([type=range]),.field select{width:100%;font:600 1rem var(--f-body);font-variant-numeric:tabular-nums;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-s);background:var(--surface-2);color:var(--ink);text-align:right;transition:border-color .2s,box-shadow .2s}
.field select{text-align:left}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent)}
.field .seg,.field select,.field .full{grid-column:1/-1}
.field:has(select) {grid-template-columns:1fr}
.field:has(.seg){grid-template-columns:1fr}
input[type=range]{grid-column:1/-1;-webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer;margin:0;--p:50%}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:99px;background:linear-gradient(90deg,var(--brand) 0 calc(11px + var(--pn,.5) * (100% - 22px)),var(--line) 0)}
input[type=range]::-moz-range-track{height:6px;border-radius:99px;background:linear-gradient(90deg,var(--brand) 0 calc(11px + var(--pn,.5) * (100% - 22px)),var(--line) 0)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-8px;border-radius:50%;background:radial-gradient(circle at 35% 30%,var(--gold-2),var(--gold));border:3px solid var(--surface);box-shadow:0 2px 8px rgba(0,0,0,.25);transition:transform .15s}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--gold-2);border:3px solid var(--surface);box-shadow:0 2px 8px rgba(0,0,0,.25)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.25)}
.seg{display:flex;gap:6px;padding:4px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px}
.seg label{flex:1;text-align:center;border-radius:999px;padding:9px;cursor:pointer;font-weight:600;font-size:.92rem;margin:0;transition:background .25s,color .25s}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--vault);color:#fff;box-shadow:var(--shadow-1)}
.seg label:has(input:focus-visible){outline:2px solid var(--gold-2)}
/* Panel de resultados: "billete" oscuro */
.results{position:relative;padding:28px;color:var(--vault-fg);background:radial-gradient(600px 300px at 100% 0,var(--vault-3),transparent 70%),linear-gradient(160deg,var(--vault-2),var(--vault));overflow:hidden;isolation:isolate}
.results::before{content:"";position:absolute;width:560px;height:560px;right:-220px;bottom:-240px;background:url(guilloche.svg) center/contain no-repeat;opacity:.12;z-index:-1;animation:spin 120s linear infinite}
.results::after{content:"";position:absolute;inset:10px;border:1px solid rgba(255,255,255,.08);border-radius:calc(var(--r-l) - 8px);pointer-events:none}
@media (max-width:860px){.results::after{border-radius:var(--r-m)}}
.results .label{font:700 .74rem/1 var(--f-body);color:var(--gold-2);letter-spacing:.14em;text-transform:uppercase}
.results .big{font:800 clamp(2.3rem,5vw,3.3rem)/1.05 var(--f-display);letter-spacing:-.03em;margin:8px 0 18px;font-variant-numeric:tabular-nums;background:linear-gradient(180deg,#fff 30%,var(--gold-2));-webkit-background-clip:text;background-clip:text;color:transparent;word-break:break-word}
.results dl{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:0;margin:0;font-size:.95rem}
.results dt,.results dd{padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.results dt{color:var(--vault-muted)}.results dd{margin:0;font-weight:700;text-align:right;font-variant-numeric:tabular-nums;color:#fff;padding-left:12px}
.results .note{font-size:.87rem;margin-top:16px;padding:12px 14px;border-radius:var(--r-s);background:rgba(224,178,82,.12);border:1px solid rgba(224,178,82,.3);color:var(--vault-fg)}
.note:empty{display:none}
.bump{animation:bump .5s var(--ease)}
@keyframes bump{30%{transform:scale(1.035)}}
.bars{display:flex;align-items:flex-end;gap:3px;height:150px;margin-top:20px;padding-top:8px;border-bottom:1px solid rgba(255,255,255,.2)}
.bars div{flex:1;display:flex;flex-direction:column-reverse;min-width:2px;position:relative;border-radius:3px 3px 0 0;overflow:hidden;transition:opacity .2s}
.bars span{display:block;transition:height .7s var(--ease)}
.bars .a{background:linear-gradient(180deg,#5ad7b0,#2a9d7c)}.bars .b{background:linear-gradient(180deg,var(--gold-2),var(--gold))}
.bars:hover div{opacity:.55}.bars div:hover{opacity:1}
.legend{display:flex;gap:16px;font-size:.8rem;color:var(--vault-muted);margin-top:8px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.legend .sw-a{background:#3fbf98}.legend .sw-b{background:var(--gold-2)}
.donut-wrap{display:flex;align-items:center;gap:18px;margin-top:18px}
.donut-wrap:empty{display:none}
.donut-wrap svg{width:112px;height:112px;flex:none;transform:rotate(-90deg);overflow:visible}
.donut-wrap circle{fill:none;stroke-width:14;transition:stroke-dasharray .8s var(--ease),stroke-dashoffset .8s var(--ease)}
.donut-wrap ul{list-style:none;margin:0;padding:0;font-size:.86rem;display:grid;gap:6px}
.donut-wrap li{display:flex;gap:8px;align-items:center;color:var(--vault-muted)}
.donut-wrap li b{color:#fff;font-variant-numeric:tabular-nums}
.donut-wrap li i{width:10px;height:10px;border-radius:3px;flex:none}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:6px}
.compare>div{background:rgba(255,255,255,.05);border-radius:var(--r-m);padding:14px;border:1px solid rgba(255,255,255,.1);transition:transform .4s var(--ease),border-color .3s,box-shadow .3s}
.compare .best{border-color:var(--gold-2);box-shadow:0 0 0 1px var(--gold-2),0 18px 40px -20px rgba(224,178,82,.6);transform:translateY(-3px)}
.compare .best h3::after{content:"Mayor ahorro";margin-left:8px;font:700 .64rem/1 var(--f-body);letter-spacing:.08em;text-transform:uppercase;color:var(--vault);background:var(--gold-2);padding:4px 7px;border-radius:99px;vertical-align:2px}
.compare h3{margin:0 0 6px;font-size:1rem;color:#fff}
.compare dl{font-size:.86rem}
@media (max-width:460px){.compare{grid-template-columns:1fr}}

/* ---------- Tarjetas 3D ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin:22px 0;perspective:1200px}
.card{position:relative;display:flex;flex-direction:column;gap:6px;padding:22px;border:1px solid var(--line);border-radius:var(--r-l);background:linear-gradient(180deg,var(--surface),var(--surface-2));text-decoration:none;color:var(--ink);box-shadow:var(--shadow-1);transform-style:preserve-3d;transition:transform .5s var(--ease),box-shadow .4s,border-color .3s;overflow:hidden;will-change:transform}
.card:hover{border-color:color-mix(in srgb,var(--brand) 45%,var(--line));box-shadow:var(--shadow-2)}
.card-glare{position:absolute;inset:0;pointer-events:none;background:radial-gradient(400px circle at var(--gx,50%) var(--gy,0%),rgba(224,178,82,.18),transparent 45%);opacity:0;transition:opacity .3s}
.card:hover .card-glare{opacity:1}
.card-icon{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;background:var(--vault);color:var(--gold-2);margin-bottom:8px;transform:translateZ(40px);box-shadow:0 12px 24px -10px rgba(11,42,34,.6);transition:transform .5s var(--ease)}
.card:hover .card-icon{transform:translateZ(50px) rotate(-6deg) scale(1.06)}
.card-icon svg{width:26px;height:26px}
.card-tag{font:700 .68rem/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);transform:translateZ(20px)}
.card strong{font:700 1.16rem/1.25 var(--f-display);letter-spacing:-.01em;transform:translateZ(28px)}
.card-desc{color:var(--muted);font-size:.93rem;line-height:1.5;transform:translateZ(16px)}
.card-go{margin-top:auto;padding-top:12px;display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.88rem;color:var(--brand);transform:translateZ(24px)}
.card-go svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.card:hover .card-go svg{transform:translateX(5px)}
.card.small{padding:18px}.card.small .card-icon{width:40px;height:40px;border-radius:12px}.card.small .card-icon svg{width:21px}
.related{padding-block:12px 40px}

/* ---------- FAQ ---------- */
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-m);margin:10px 0;transition:border-color .3s,box-shadow .3s}
.faq details[open]{border-color:color-mix(in srgb,var(--brand) 40%,var(--line));box-shadow:var(--shadow-1)}
.faq summary{list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;font-weight:700;cursor:pointer;padding:16px 20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{flex:none;width:28px;height:28px;border-radius:50%;background:var(--brand-soft);position:relative;transition:transform .4s var(--ease),background .3s}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;background:var(--brand);transform:translate(-50%,-50%)}
.faq summary i::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .4s var(--ease)}
.faq details[open] summary i{transform:rotate(180deg);background:var(--gold-soft)}
.faq details[open] summary i::after{transform:translate(-50%,-50%) rotate(0)}
.faq-a{padding:0 20px 16px;color:var(--muted)}.faq-a p{margin:0}
.disclaimer{font-size:.84rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:40px}

/* ---------- Portada ---------- */
.home-hero{position:relative;overflow:hidden;isolation:isolate;color:var(--vault-fg);background:
  radial-gradient(900px 600px at 80% 20%,var(--vault-3),transparent 60%),
  radial-gradient(700px 500px at 0% 100%,var(--vault-2),transparent 60%),var(--vault);padding-block:40px 70px}
.home-hero::after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--gold-2),transparent);opacity:.6}
#stage{position:absolute;inset:0;width:100%;height:100%;z-index:-1;display:block}
.home-hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:center}
@media (max-width:900px){.home-hero-grid{grid-template-columns:1fr;gap:32px}}
.home-hero h1{font-size:clamp(2.4rem,6.4vw,4.6rem);color:#fff;max-width:13ch;margin:.25em 0 .3em}
.home-hero h1 .gold{background:linear-gradient(100deg,var(--gold-2),#fff3cf 45%,var(--gold-2) 60%,var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent;background-size:200% 100%;animation:foil 6s ease-in-out infinite}
@keyframes foil{50%{background-position:100% 0}}
.home-hero .lead{color:var(--vault-muted)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:999px;font-weight:700;text-decoration:none;transition:transform .3s var(--ease),box-shadow .3s,background .3s}
.btn-gold{background:linear-gradient(180deg,var(--gold-2),var(--gold));color:#1d1503;box-shadow:0 10px 30px -10px rgba(224,178,82,.7),inset 0 1px 0 rgba(255,255,255,.5)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(224,178,82,.8)}
.btn-ghost{color:#fff;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.04)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn svg{width:18px;height:18px}
.mini{position:relative;padding:26px;border-radius:var(--r-l);background:linear-gradient(160deg,rgba(255,255,255,.12),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:0 40px 80px -30px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.18);transform:perspective(1100px) rotateY(-10deg) rotateX(6deg);transition:transform .8s var(--ease);transform-style:preserve-3d}
.mini:hover{transform:perspective(1100px) rotateY(0) rotateX(0)}
@media (max-width:900px){.mini{transform:none}}
.mini h2{font-size:1.1rem;margin:0 0 4px;color:#fff;transform:translateZ(30px)}
.mini .sub{margin:0 0 16px;font-size:.88rem;color:var(--vault-muted)}
.mini form{display:grid;gap:14px}
.mini .field{grid-template-columns:1fr auto}
.mini .field label{color:var(--vault-fg);font-size:.88rem}
.mini .field output{font:700 .95rem var(--f-body);font-variant-numeric:tabular-nums;color:#fff}
.mini input[type=range]::-webkit-slider-runnable-track{background:linear-gradient(90deg,var(--gold-2) 0 calc(11px + var(--pn,.5) * (100% - 22px)),rgba(255,255,255,.18) 0)}
.mini input[type=range]::-moz-range-track{background:linear-gradient(90deg,var(--gold-2) 0 calc(11px + var(--pn,.5) * (100% - 22px)),rgba(255,255,255,.18) 0)}
.mini input[type=range]::-webkit-slider-thumb{border-color:var(--vault)}
.mini-out{margin-top:18px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.18);transform:translateZ(40px)}
.mini-out .label{font:700 .72rem/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold-2)}
.mini-out .big{font:800 2.6rem/1.05 var(--f-display);letter-spacing:-.03em;color:#fff;margin:6px 0 4px;font-variant-numeric:tabular-nums}
.mini-out p{margin:0;font-size:.86rem;color:var(--vault-muted)}
.mini-out a{color:var(--gold-2);font-weight:700}
.marquee-wrap{overflow:hidden;padding-block:0 26px;margin-bottom:-16px}
.marquee{overflow:hidden;background:var(--gold-2);color:#1d1503;border-block:1px solid var(--gold);transform:rotate(-1.2deg) scale(1.02);margin:-14px 0 10px;position:relative;z-index:3;box-shadow:0 14px 30px -18px rgba(0,0,0,.5)}
.marquee div{display:flex;gap:44px;width:max-content;padding:12px 0;font:800 1rem/1 var(--f-display);letter-spacing:.02em;text-transform:uppercase;animation:marq 38s linear infinite}
.marquee span{display:inline-flex;align-items:center;gap:44px}
.marquee span::after{content:"✦";font-size:.8rem}
@keyframes marq{to{transform:translateX(-50%)}}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;margin-top:56px}
.section-head h2{margin:0}
.section-head p{margin:0;color:var(--muted);max-width:46ch}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:26px 0;counter-reset:s;list-style:none;padding:0}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.steps li{position:relative;padding:24px;border-radius:var(--r-l);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1);margin:0}
.steps li::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;font:800 1.1rem var(--f-display);color:var(--vault);background:linear-gradient(180deg,var(--gold-2),var(--gold));margin-bottom:12px;box-shadow:0 8px 18px -8px rgba(168,122,34,.8)}
.steps strong{display:block;font:700 1.1rem var(--f-display);margin-bottom:4px}
.steps p{margin:0;color:var(--muted);font-size:.95rem}
.trust{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);margin:28px 0}
@media (max-width:760px){.trust{grid-template-columns:1fr 1fr}}
.trust div{background:var(--surface);padding:22px}
.trust b{display:block;font:800 2rem/1 var(--f-display);color:var(--brand);letter-spacing:-.03em;margin-bottom:6px}
.trust span{font-size:.9rem;color:var(--muted)}

/* ---------- Pie ---------- */
.site-footer{position:relative;overflow:hidden;isolation:isolate;background:var(--vault);color:var(--vault-muted);margin-top:40px;padding-block:48px 16px;font-size:.93rem}
.footer-rosette{left:-260px;right:auto;top:auto;bottom:-420px;opacity:.08}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:32px}
.footer-inner nav{display:flex;flex-direction:column;gap:6px}
.footer-inner strong{color:#fff;font-family:var(--f-display);margin-bottom:4px}
.footer-inner a{color:var(--vault-muted);text-decoration:none;transition:color .2s}.footer-inner a:hover{color:var(--gold-2)}
.footer-brand .logo{color:#fff}
.footer-brand p{max-width:40ch}
@media (max-width:720px){.footer-inner{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
.copy{font-size:.8rem;margin-top:32px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}

/* ---------- Aparición al hacer scroll ---------- */
.js .rv{opacity:0;transform:translateY(26px) rotateX(8deg);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0s)}
.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .js .rv{opacity:1;transform:none}
}

.rotator{display:inline-block;perspective:600px}
.rotator .gold{display:inline-block;transform-origin:50% 60%;transition:transform .55s var(--ease),opacity .55s var(--ease)}
.rotator .gold.out{transform:translateY(-35%) rotateX(85deg);opacity:0}
.rotator .gold.pre{transform:translateY(35%) rotateX(-85deg);opacity:0;transition:none}
.cards-calc{grid-template-columns:repeat(3,minmax(0,1fr))}
.cards-guide,.cards-related{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.cards-calc,.cards-guide,.cards-related{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.cards-calc,.cards-guide,.cards-related{grid-template-columns:1fr}}

/* ===== Fondo blanco: cabecera, héroes y pie usan las zonas claras; el verde queda en los paneles ===== */
.site-header{background:var(--head-bg);color:var(--head-fg);border-bottom:1px solid var(--head-line)}
.main-nav a{color:var(--head-muted)}
.main-nav a:hover{color:var(--brand);background:var(--head-hover)}
.currency select,.theme-btn{border-color:var(--head-line);background:var(--head-chip);color:var(--head-fg)}
.logo b{color:var(--gold)}
.page-hero,.home-hero{background:var(--hero-bg);color:var(--hero-fg)}
.page-hero h1,.home-hero h1{color:var(--hero-fg)}
.page-hero .lead,.home-hero .lead{color:var(--hero-muted)}
.page-hero .lead strong{color:var(--hero-fg)}
.eyebrow{color:var(--gold)}
.crumbs ol,.crumbs a{color:var(--hero-muted)}.crumbs a:hover{color:var(--brand)}
.badges li{background:var(--chip-bg);border-color:var(--chip-line);color:var(--hero-fg)}
.badges li::before{border-color:var(--check)}
.byline{color:var(--hero-muted)}.byline a{color:var(--brand)}
.hero-rosette,.footer-rosette,.results::before{background-image:var(--rosette)}
.hero-rosette,.footer-rosette{opacity:var(--rosette-op)}
.results::before{background-image:url(guilloche.svg)}
.hero-icon{background:linear-gradient(150deg,var(--vault-3),var(--vault));border-color:transparent;box-shadow:0 20px 40px -18px rgba(11,42,34,.55),inset 0 1px 0 rgba(255,255,255,.15)}
.home-hero h1 .gold{background-image:var(--foil);background-size:200% 100%}
.btn-ghost{color:var(--hero-fg);border-color:var(--line);background:var(--surface)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand)}
.mini{background:radial-gradient(500px 260px at 100% 0,var(--vault-3),transparent 70%),linear-gradient(160deg,var(--vault-2),var(--vault));border-color:rgba(255,255,255,.08);color:var(--vault-fg);box-shadow:0 40px 80px -30px rgba(11,42,34,.55),inset 0 1px 0 rgba(255,255,255,.12)}
.calc{margin-top:-8px}
.page-hero{padding-block:20px 44px}
.marquee{color:#1d1503}
.site-footer{background:var(--foot-bg);color:var(--foot-muted);border-top:1px solid var(--foot-line)}
.footer-inner strong,.footer-brand .logo{color:var(--foot-fg)}
.footer-inner a{color:var(--foot-muted)}.footer-inner a:hover{color:var(--brand)}
.copy{border-top-color:var(--foot-line)}

.cards-guide{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){.cards-guide{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.cards-guide{grid-template-columns:1fr}}

/* ---------- Menú ☰ ---------- */
.menu-btn{order:3;width:40px;height:40px;border-radius:12px;border:1px solid var(--head-line);background:var(--head-chip);display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer;padding:0;transition:background .2s,border-color .2s}
.menu-btn:hover{background:var(--head-hover);border-color:var(--brand)}
.menu-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--head-fg);transition:transform .3s var(--ease),opacity .2s}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
@media (max-width:720px){.main-nav{display:none}}
.drawer{position:fixed;inset:0;z-index:80;visibility:hidden;pointer-events:none}
.drawer.open{visibility:visible;pointer-events:auto}
.drawer-bg{position:absolute;inset:0;background:rgba(6,19,15,.45);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);opacity:0;transition:opacity .3s}
.drawer.open .drawer-bg{opacity:1}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(400px,92vw);background:var(--surface);color:var(--ink);box-shadow:-20px 0 60px -20px rgba(0,0,0,.4);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .38s var(--ease);padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);padding-right:env(safe-area-inset-right,0px)}
.drawer.open .drawer-panel{transform:none}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px 10px}
.drawer-head strong{font:800 1.3rem var(--f-display)}
.drawer-x{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);display:grid;place-items:center;cursor:pointer}
.drawer-x svg{width:18px;height:18px}
.drawer-search{display:flex;align-items:center;gap:10px;margin:6px 20px 10px;padding:0 14px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2);transition:border-color .2s,box-shadow .2s}
.drawer-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent)}
.drawer-search svg{width:18px;height:18px;color:var(--muted);flex:none}
.drawer-search input{flex:1;min-width:0;border:0;background:transparent;font:500 1rem var(--f-body);color:var(--ink);padding:13px 0;outline:none}
.drawer-body{overflow-y:auto;padding:4px 12px 24px;flex:1;overscroll-behavior:contain}
.drawer-sec{font:700 .72rem/1 var(--f-body);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:18px 10px 8px}
.drawer-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.drawer-list a{display:flex;gap:12px;align-items:center;padding:10px;border-radius:12px;color:var(--ink);text-decoration:none;transition:background .15s}
.drawer-list a:hover,.drawer-list a:focus-visible,.drawer-list a.hit{background:var(--brand-soft)}
.drawer-list b{display:block;font:600 .97rem/1.3 var(--f-body)}
.drawer-list small{display:block;color:var(--muted);font-size:.8rem;line-height:1.35}
.dr-ico{width:36px;height:36px;border-radius:11px;background:var(--vault);color:var(--gold-2);display:grid;place-items:center;flex:none}
.dr-ico svg{width:19px;height:19px}
.drawer-plain a{padding:9px 10px}
.drawer-empty{margin:8px 10px;color:var(--muted);font-size:.92rem}
.drawer-list li[hidden],.drawer-sec[hidden]{display:none}
body.menu-open{overflow:hidden}
@media (max-width:720px){
  .header-inner{flex-wrap:nowrap;gap:8px;min-height:58px}
  .logo{font-size:1rem;gap:8px;min-width:0}
  .logo-coin img{width:26px;height:26px}
  .header-tools{gap:6px;margin-left:auto}
  .currency select{padding:6px 4px 6px 8px;font-size:.8rem}
  .theme-btn{width:34px;height:34px}
  .menu-btn{width:38px;height:38px}
}
@media (max-width:350px){.theme-btn{display:none}}