:root {
  --ink: #0b0b0b;
  --ink-soft: #11110f;
  --paper: #e9e5dc;
  --muted: #a7a298;
  --gold: #d6aa55;
  --gold-light: #f0cf88;
  --line: rgba(233, 229, 220, 0.16);
  --font-display: "Manrope", sans-serif;
  --font-body: "DM Sans", sans-serif;
  --shell: min(1200px, calc(100% - 48px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  z-index: 20;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { color: inherit; font: inherit; }
.section-shell { width: var(--shell); margin-inline: auto; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link:focus { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 16px; background: var(--gold); color: var(--ink); }

.site-header {
  position: fixed;
  z-index: 10;
  inset: 0 0 auto;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: max(24px, calc((100vw - 1200px) / 2));
  transition: background .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { background: rgba(11,11,11,.88); border-color: var(--line); backdrop-filter: blur(16px); }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 700 19px/1 var(--font-display); letter-spacing: -.06em; }
.brand i { width: 6px; height: 6px; border-radius: 50%; background: var(--gold); }
.site-nav { display: flex; gap: 34px; font-size: 13px; letter-spacing: .04em; }
.site-nav a { color: var(--muted); transition: color .2s; }
.site-nav a:hover, .site-nav a.active { color: var(--paper); }
.menu-toggle { display: none; background: none; border: 0; padding: 10px 0 10px 10px; }

.hero { min-height: 100svh; display: grid; grid-template-columns: .95fr .75fr; gap: clamp(40px, 7vw, 105px); align-items: center; padding-block: 130px 70px; position: relative; }
.hero::before { content: ""; position: absolute; width: 620px; height: 620px; left: -430px; top: 25%; border: 1px solid rgba(214,170,85,.12); border-radius: 50%; box-shadow: 0 0 0 100px rgba(214,170,85,.018), 0 0 0 200px rgba(214,170,85,.012); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 22px; color: var(--gold-light); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 26px; height: 1px; background: currentColor; }
h1, h2 { margin: 0; font-family: var(--font-display); font-weight: 500; letter-spacing: -.065em; line-height: .98; }
h1 { font-size: clamp(58px, 7vw, 106px); }
h1 em, h2 em { color: var(--gold); font-family: Georgia, serif; font-weight: 400; }
.hero-intro { max-width: 550px; margin: 34px 0; color: var(--muted); font-size: clamp(17px, 1.4vw, 20px); }
.hero-intro strong { color: var(--paper); font-weight: 500; }
.hero-actions, .contact-actions { display: flex; align-items: center; gap: 30px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; min-width: 225px; padding: 15px 18px; border: 1px solid var(--gold); font-size: 13px; letter-spacing: .03em; transition: color .25s, background .25s, transform .25s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--gold); color: var(--ink); }
.button-primary:hover { background: var(--gold-light); }
.text-link { display: inline-flex; gap: 16px; align-items: center; padding-block: 8px; border-bottom: 1px solid var(--line); font-size: 14px; transition: border-color .2s; }
.text-link:hover { border-color: var(--gold); }
.hero-visual { margin: 0; position: relative; justify-self: end; width: min(100%, 500px); }
.image-frame { overflow: hidden; aspect-ratio: .74; background: #181914; }
.image-frame img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.85) contrast(1.04); transition: transform 1.1s cubic-bezier(.2,.7,.2,1); }
.hero-visual:hover img { transform: scale(1.025); }
.hero-visual figcaption { position: absolute; left: -56px; bottom: 28px; display: flex; align-items: flex-start; gap: 16px; background: var(--paper); color: var(--ink); padding: 16px 20px; }
.hero-visual figcaption span { color: #88703d; font-size: 10px; }
.hero-visual figcaption p { margin: 0; font-size: 13px; line-height: 1.35; }
.scroll-cue { position: absolute; bottom: 30px; left: 0; display: flex; align-items: center; gap: 10px; color: #747068; font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.scroll-cue span { width: 1px; height: 24px; background: var(--gold); animation: pulse 1.8s infinite; }

.about, .interests, .contact { padding-block: clamp(100px, 13vw, 190px); border-top: 1px solid var(--line); }
.section-number { color: var(--gold); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.about-content { display: grid; grid-template-columns: 1fr .75fr; gap: 9vw; margin-block: 44px 100px; }
h2 { font-size: clamp(48px, 6vw, 83px); }
.about-text { color: var(--muted); font-size: 18px; }
.about-text p { margin: 0 0 22px; }
.principles { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principles article { min-height: 215px; padding: 28px 34px 28px 0; }
.principles article + article { padding-left: 34px; border-left: 1px solid var(--line); }
.principles span, .card-index { color: #8a857b; font-size: 10px; }
.principles h3 { margin: 34px 0 8px; font: 500 22px var(--font-display); }
.principles p { max-width: 280px; margin: 0; color: var(--muted); font-size: 14px; }

.interests { display: grid; grid-template-columns: .72fr 1fr; gap: 9vw; align-items: start; }
.section-heading { position: sticky; top: 130px; }
.section-heading .section-number { margin: 0 0 36px; }
.interest-list { border-top: 1px solid var(--line); }
.interest-card { display: grid; grid-template-columns: 36px 1fr 28px; gap: 20px; padding: 31px 0; border-bottom: 1px solid var(--line); outline: none; transition: padding .3s, background .3s; }
.interest-card:hover, .interest-card:focus-visible { padding-inline: 18px; background: rgba(214,170,85,.045); }
.card-kicker { margin: 0 0 8px; color: var(--gold); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.interest-card h3 { margin: 0 0 8px; font: 500 clamp(24px, 2.6vw, 34px) var(--font-display); letter-spacing: -.04em; }
.interest-card p:last-child { margin: 0; color: var(--muted); font-size: 14px; }
.card-arrow { color: var(--gold); align-self: center; font-size: 20px; transition: transform .25s; }
.interest-card:hover .card-arrow { transform: translate(3px,-3px); }

.contact { min-height: 76vh; display: grid; grid-template-columns: .32fr 1fr; align-content: center; background: radial-gradient(circle at 80% 50%, rgba(214,170,85,.07), transparent 34%); }
.contact-main { max-width: 820px; }
.contact-main h2 { font-size: clamp(58px, 8vw, 116px); }
.contact-main > p:not(.eyebrow) { max-width: 550px; color: var(--muted); font-size: 18px; margin: 32px 0; }
.site-footer { min-height: 110px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 30px; border-top: 1px solid var(--line); color: #8f8a80; font-size: 11px; }
.site-footer p:last-child { text-align: right; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s ease; }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal.is-visible { opacity: 1; transform: none; }
@keyframes pulse { 0%,100% { transform: scaleY(.45); transform-origin: top; } 50% { transform: scaleY(1); } }

@media (max-width: 820px) {
  :root { --shell: min(100% - 32px, 680px); }
  .site-header { height: 68px; padding-inline: 16px; }
  .menu-toggle { display: grid; gap: 6px; z-index: 2; }
  .menu-toggle span:not(.sr-only) { width: 24px; height: 1px; background: var(--paper); transition: transform .25s; }
  .menu-toggle[aria-expanded="true"] span:nth-last-child(2) { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 0; display: flex; flex-direction: column; justify-content: center; padding: 40px; background: rgba(11,11,11,.97); transform: translateX(100%); transition: transform .35s ease; }
  .site-nav.open { transform: none; }
  .site-nav a { font: 500 34px var(--font-display); color: var(--paper); }
  .hero { grid-template-columns: 1fr; gap: 50px; min-height: auto; padding-top: 120px; }
  .hero-copy { position: relative; z-index: 1; }
  .hero-visual { width: min(92%, 480px); justify-self: end; }
  .hero-visual figcaption { left: -9%; }
  .scroll-cue { display: none; }
  .about-content, .interests, .contact { grid-template-columns: 1fr; }
  .about-content { gap: 38px; margin-bottom: 70px; }
  .principles { grid-template-columns: 1fr; }
  .principles article { min-height: auto; padding: 28px 0; }
  .principles article + article { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .section-heading { position: static; }
  .interests { gap: 70px; }
  .contact { gap: 36px; }
}

@media (max-width: 480px) {
  h1 { font-size: clamp(50px, 15vw, 66px); }
  .hero-actions, .contact-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .button { width: 100%; }
  .hero-visual { width: 100%; }
  .hero-visual figcaption { left: -8px; bottom: 16px; }
  .about, .interests, .contact { padding-block: 90px; }
  .interest-card { grid-template-columns: 24px 1fr 20px; gap: 12px; }
  .site-footer { grid-template-columns: 1fr 1fr; padding-block: 28px; }
  .site-footer p { margin: 0; text-align: right; }
  .site-footer p:last-child { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Editorial identity: broad image-led opening and a restrained black/cream/gold palette. */
body::before { display:none; }
:root { --shell:min(1320px,calc(100% - 80px)); }
h1,h2 { font-weight:500; letter-spacing:-.045em; line-height:1.07; }
h1 em,h2 em { font-family:var(--font-display); font-style:normal; font-weight:inherit; }
.site-header { height:96px; padding-inline:max(40px,calc((100vw - 1320px)/2)); border-bottom:1px solid var(--line); background:rgba(11,11,11,.88); }
.brand { font-size:23px; letter-spacing:-.04em; }
.site-nav { gap:30px; font-size:14px; letter-spacing:0; }
.site-nav a { color:var(--paper); }
.site-nav a:hover { color:var(--gold-light); }
.button { padding:17px 24px; font-size:14px; border-radius:0; }
.button span,.text-link span { font-size:22px; }
a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible { outline:2px solid var(--gold); outline-offset:5px; }
.landing-page .hero { width:100%; min-height:max(850px,min(1000px,100svh)); height:auto; padding:160px max(40px,calc((100vw - 1320px)/2)) 250px; display:flex; align-items:center; isolation:isolate; }
.landing-page .hero::before { display:none; }
.landing-page .hero-copy { max-width:770px; z-index:2; }
.landing-page .hero h1 { font-size:clamp(52px,5.4vw,82px); line-height:1.03; }
.landing-page .hero-intro { color:var(--paper); max-width:530px; font-size:18px; }
.landing-page .hero-visual { position:absolute; inset:0 0 0 auto; width:66%; height:100%; z-index:-2; }
.landing-page .image-frame { width:100%; height:100%; aspect-ratio:auto; }
.landing-page .image-frame img { object-position:50% 36%; filter:saturate(.6) brightness(.72); }
.landing-page .hero::after { content:""; position:absolute; inset:0; z-index:-1; background:linear-gradient(90deg,#0b0b0b 10%,rgba(11,11,11,.93) 28%,rgba(11,11,11,.25) 69%),linear-gradient(0deg,rgba(11,11,11,.55),transparent 70%); }
.landing-page .hero-visual figcaption { display:none; }
.hero-topics { position:absolute; inset:auto max(40px,calc((100vw - 1320px)/2)) 40px; display:grid; grid-template-columns:repeat(3,1fr); background:rgba(20,20,18,.86); backdrop-filter:blur(12px); border-top:1px solid var(--gold); }
.hero-topics a { padding:25px 30px; display:grid; gap:8px; }
.hero-topics a+a { border-left:1px solid var(--line); }
.hero-topics small { color:var(--gold-light); letter-spacing:.08em; font-size:10px; }
.hero-topics strong { font:500 23px var(--font-display); }
.hero-topics span { display:flex; justify-content:space-between; gap:20px; color:var(--muted); font-size:13px; }
.hero-topics b { color:var(--gold); font-size:20px; font-weight:400; }
.hero-topics a:hover { background:rgba(214,170,85,.09); }
.landing-page .about { width:100%; background:var(--paper); color:var(--ink); padding:110px max(40px,calc((100vw - 1320px)/2)); --muted:#5c5850; --line:rgba(11,11,11,.2); --gold:#836021; }
.landing-page .about-content { gap:6vw; margin-block:38px 70px; }
.landing-page .about h2 { font-size:clamp(40px,4.4vw,64px); }
.landing-page .about-text { font-size:17px; }
.landing-page .principles h3 { margin-top:24px; }
.landing-page .interests { grid-template-columns:1fr; gap:48px; padding-block:110px; }
.landing-page .section-heading { position:static; display:flex; justify-content:space-between; gap:30px; align-items:start; }
.landing-page .section-heading h2 { font-size:clamp(40px,4.5vw,64px); width:62%; }
.landing-page .interest-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); border-top:0; gap:0 48px; }
.landing-page .interest-card { padding:32px 0; min-height:190px; }
.landing-page .section-intro { max-width:560px; margin:24px 0 0; color:var(--muted); font-size:17px; }
/* Proyecto destacado: reutiliza el bloque dorado que antes tenía la tarjeta del monitor. */
.featured { padding-block:110px 0; }
.featured .section-number { margin:0 0 30px; }
.featured-card { display:grid; grid-template-columns:1.4fr 1fr; background:var(--gold); color:var(--ink); }
.featured-main { padding:48px; }
.featured-card .card-kicker { color:#3f321c; }
.featured-card h2 { font-size:clamp(38px,4.4vw,60px); }
.featured-main > p:not(.card-kicker) { max-width:560px; margin:24px 0 34px; color:#2b2214; font-size:17px; }
.featured-tool { padding:48px; border-left:1px solid rgba(11,11,11,.22); display:flex; flex-direction:column; justify-content:center; gap:10px; }
.featured-tool h3 { margin:0; font:500 clamp(28px,2.8vw,38px) var(--font-display); letter-spacing:-.04em; }
.featured-tool p:not(.card-kicker) { margin:0; color:#2b2214; font-size:15px; }
.status-badge { display:inline-block; align-self:flex-start; margin-top:16px; padding:5px 12px; border:1px solid var(--ink); font-size:11px; letter-spacing:.12em; text-transform:uppercase; }
.button-dark { background:var(--ink); color:var(--paper); border-color:var(--ink); }
.button-dark:hover { background:#2b2a26; }
.featured-card a:focus-visible { outline-color:var(--ink); }
.about-text .text-link { color:var(--ink); }
.landing-page .contact { padding-block:110px; min-height:620px; background:none; }
.landing-page .contact-main h2 { font-size:clamp(50px,6vw,88px); }
.site-footer { padding-block:32px; min-height:140px; }
@media(max-width:820px) {
 :root { --shell:calc(100% - 40px); }
 .site-header { height:76px; padding-inline:20px; }
 .site-nav { gap:24px; }.site-nav a { font-size:28px; }
 .landing-page .hero { height:auto; min-height:1050px; padding:150px 20px 350px; align-items:flex-start; }
 .landing-page .hero-visual { width:100%; opacity:.68; }
 .landing-page .hero::after { background:linear-gradient(90deg,rgba(11,11,11,.9),rgba(11,11,11,.25)),linear-gradient(0deg,#0b0b0b,transparent 75%); }
 .hero-topics { inset:auto 20px 30px; grid-template-columns:1fr; }
 .hero-topics a { padding:17px 20px; }.hero-topics a+a { border-left:0; border-top:1px solid var(--line); }
 .hero-topics strong { font-size:20px; }.hero-topics span { font-size:12px; }
 .landing-page .about { padding:70px 20px; }.landing-page .about-content { gap:30px; }
 .landing-page .section-heading { display:block; }.landing-page .section-heading h2 { width:auto; }
 .landing-page .interests,.landing-page .contact { padding-block:75px; }
 .landing-page .interest-list { grid-template-columns:1fr; }
 .featured { padding-top:75px; }
 .featured-card { grid-template-columns:1fr; }
 .featured-main,.featured-tool { padding:28px 22px; }
 .featured-tool { border-left:0; border-top:1px solid rgba(11,11,11,.22); }
}
@media(max-width:480px) {
 .landing-page .hero { min-height:1060px; padding-top:125px; padding-bottom:370px; }
 .landing-page .hero h1 { font-size:clamp(43px,11vw,58px); }
 .landing-page .hero-intro { font-size:16px; margin-block:24px; }
 .landing-page .hero-actions { gap:12px; }.landing-page .hero-actions .button { width:auto; }
 .brand { font-size:20px; }
}
.landing-page .about .principles span { color:#5c5850; }
/* Página /mercados: presentación estática del Electricity Markets Monitor. */
.markets { padding-block:170px 110px; }
.markets h1 { font-size:clamp(46px,6vw,88px); }
.markets-lead { max-width:640px; margin:34px 0 0; color:var(--paper); font-size:18px; }
.markets-tools { margin-top:90px; }
.markets-tools .section-number { margin:0 0 30px; }
.markets-tools .featured-main > p:not(.card-kicker) { margin:20px 0 0; }
.featured-tool .text-link { align-self:flex-start; margin-top:12px; border-color:rgba(11,11,11,.35); }
.featured-tool .text-link:hover { border-color:var(--ink); }
.site-nav a[aria-current="page"] { color:var(--gold-light); }
@media(max-width:820px) { .markets { padding-block:120px 75px; } .markets-tools { margin-top:60px; } }