/* ============================================================
   MITIGAION — Sistema de diseño
   Consultoría técnica en riesgo de litio · Tecnología AVD
   Estética: instrumentación técnica + editorial oscuro
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Base oscura (carbón frío) */
  --bg:        #07090c;
  --bg-2:      #0a0d11;
  --panel:     #0e1318;
  --panel-2:   #121922;
  --line:      rgba(255, 255, 255, .075);
  --line-2:    rgba(255, 255, 255, .14);

  /* Texto */
  --text:      #e9eef3;
  --text-dim:  #99a4af;
  --text-mute: #626c77;

  /* Acentos */
  --ember:     #ff6a2c;   /* señal térmica / energía / riesgo */
  --ember-2:   #ffb020;   /* ámbar */
  --contain:   #21e0b6;   /* contención / mitigado / OK */
  --contain-d: #0e7d66;

  /* Gradientes */
  --grad-heat: linear-gradient(135deg, var(--ember-2), var(--ember));
  --grad-cool: linear-gradient(135deg, var(--contain), #1aa9ff);

  /* Imágenes de fondo */
  --hero-img:  url("/assets/img/hero-bg.webp");
  --field-img: url("/assets/img/field-bg.webp");

  /* Tipografía */
  --f-display: "Bricolage Grotesque", "Archivo", sans-serif;
  --f-body:    "Hanken Grotesk", system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, monospace;

  /* Métrica */
  --maxw: 1240px;
  --pad:  clamp(20px, 5vw, 64px);
  --r:    14px;
  --r-sm: 9px;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--f-body);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
  /* Atmósfera oscura con profundidad (no negro plano) */
  background:
    radial-gradient(1200px 700px at 78% -8%, rgba(255,106,44,.10), transparent 60%),
    radial-gradient(1000px 800px at -10% 18%, rgba(33,224,182,.07), transparent 55%),
    radial-gradient(900px 900px at 50% 120%, rgba(26,169,255,.06), transparent 60%),
    linear-gradient(180deg, #0b0f15 0%, #090c11 40%, #0a0d13 100%);
  background-attachment: fixed;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
::selection { background: var(--ember); color: #0a0d11; }

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--text-mute);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--ember);
}
.section { padding-block: clamp(72px, 11vw, 150px); position: relative; }
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head h2 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin-top: 18px;
}
.section-head p { color: var(--text-dim); margin-top: 20px; font-size: 18px; max-width: 620px; }
.lead-accent { color: var(--ember); }
.text-contain { color: var(--contain); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .01em;
  transition: transform .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; transition: transform .35s var(--ease); }
.btn--primary { background: var(--text); color: #07090c; }
.btn--primary:hover { transform: translateY(-2px); background: #fff; }
.btn--primary:hover svg { transform: translate(3px, -3px); }
.btn--ghost { border: 1px solid var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--ember); color: var(--ember); transform: translateY(-2px); }
.btn--ember { background: var(--grad-heat); color: #160a00; }
.btn--ember:hover { transform: translateY(-2px); filter: brightness(1.08); }

/* ---------- Navegación ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--pad);
  transition: background .4s var(--ease), border-color .4s var(--ease), padding .4s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7, 9, 12, .78);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
  padding-block: 12px;
}
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--f-display); font-weight: 700; font-size: 19px; letter-spacing: -.01em; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand b { color: var(--ember); font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a { font-size: 14.5px; color: var(--text-dim); transition: color .25s; position: relative; }
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 0;
  background: var(--ember); transition: width .3s var(--ease);
}
.nav-links a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; width: 28px; height: 20px; position: relative; }
.nav-toggle span { position: absolute; left: 0; height: 2px; width: 100%; background: var(--text); transition: .3s var(--ease); }
.nav-toggle span:nth-child(1) { top: 0; } .nav-toggle span:nth-child(2) { top: 9px; } .nav-toggle span:nth-child(3) { top: 18px; }

/* Pill normativa */
.pill {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 100px; border: 1px solid var(--line-2);
  color: var(--ember); display: inline-flex; align-items: center; gap: 8px;
}
.pill .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ember); box-shadow: 0 0 0 0 var(--ember); animation: pulse 2.4s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(255,106,44,.5);} 70%{ box-shadow:0 0 0 9px rgba(255,106,44,0);} 100%{box-shadow:0 0 0 0 rgba(255,106,44,0);} }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: 150px; padding-bottom: 90px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 70% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 70% 0%, #000 0%, transparent 75%);
}
.hero-glow {
  position: absolute; top: -10%; right: -5%; width: 60vw; height: 60vw; max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, rgba(255,106,44,.16), rgba(255,176,32,.05) 40%, transparent 70%);
  filter: blur(20px); border-radius: 50%;
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 76px);
  line-height: .98;
  letter-spacing: -.025em;
  margin: 26px 0 24px;
}
.hero h1 .hl { color: var(--ember); }
.hero h1 .invisible {
  position: relative; color: var(--text-dim);
}
.hero h1 .invisible::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .12em; height: 2px;
  background: repeating-linear-gradient(90deg, var(--contain) 0 8px, transparent 8px 16px);
  opacity: .7;
}
.hero p.sub { color: var(--text-dim); font-size: clamp(16px, 1.6vw, 19px); max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 28px; margin-top: 44px; flex-wrap: wrap; }
.hero-meta .m { font-family: var(--f-mono); font-size: 12.5px; color: var(--text-mute); letter-spacing: .04em; }
.hero-meta .m b { display: block; font-family: var(--f-body); font-size: 24px; color: var(--text); letter-spacing: -.01em; margin-bottom: 2px; font-weight: 700; }

/* Panel instrumento del hero */
.instr {
  position: relative; background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line); border-radius: var(--r); padding: 24px;
  box-shadow: 0 40px 80px -40px rgba(0,0,0,.8);
}
.instr::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--r); padding: 1px;
  background: linear-gradient(160deg, rgba(255,106,44,.4), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none;
}
.instr-head { display: flex; justify-content: space-between; align-items: center; font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 18px; }
.instr-head .live { color: var(--contain); display: inline-flex; align-items: center; gap: 7px; }
.instr-head .live::before { content:""; width:7px;height:7px;border-radius:50%;background:var(--contain); animation: pulse-c 2s infinite; }
@keyframes pulse-c { 0%{box-shadow:0 0 0 0 rgba(33,224,182,.5);}70%{box-shadow:0 0 0 7px rgba(33,224,182,0);}100%{box-shadow:0 0 0 0 transparent;} }
.gauge { position: relative; height: 150px; display: grid; place-items: center; margin: 6px 0 14px; }
.gauge svg { width: 220px; height: 130px; overflow: visible; }
.gauge .read { position: absolute; bottom: 6px; text-align: center; }
.gauge .read .val { font-family: var(--f-mono); font-size: 30px; font-weight: 700; color: var(--text); }
.gauge .read .unit { font-family: var(--f-mono); font-size: 11px; color: var(--text-mute); letter-spacing: .12em; }
.instr-rows { display: grid; gap: 10px; }
.instr-row { display: flex; justify-content: space-between; align-items: center; padding: 11px 14px; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-sm); font-size: 13.5px; }
.instr-row .k { color: var(--text-dim); font-family: var(--f-mono); font-size: 12px; letter-spacing: .04em; }
.instr-row .v { font-weight: 600; }
.tag-risk { color: var(--ember); } .tag-ok { color: var(--contain); }

/* ---------- Marquee aliados ---------- */
.allies { border-block: 1px solid var(--line); padding-block: 22px; }
.allies-inner { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; justify-content: center; }
.allies span { font-family: var(--f-mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-mute); }
.allies .a { color: var(--text-dim); font-weight: 600; font-family: var(--f-display); font-size: 18px; letter-spacing: .02em; }
.allies .sep { color: var(--line-2); }

/* ---------- Amenaza (contexto) ---------- */
.threat-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.threat-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.stat { background: var(--panel); padding: 28px 24px; }
.stat .n { font-family: var(--f-display); font-weight: 700; font-size: clamp(34px, 4vw, 46px); letter-spacing: -.02em; background: var(--grad-heat); -webkit-background-clip: text; background-clip: text; color: transparent; line-height: 1; }
.stat .l { color: var(--text-dim); font-size: 14px; margin-top: 10px; }
.threat-list { display: grid; gap: 18px; margin-top: 28px; }
.threat-list li { list-style: none; display: flex; gap: 14px; align-items: flex-start; color: var(--text-dim); font-size: 16px; }
.threat-list li b { color: var(--text); font-weight: 600; }
.threat-list .ic { flex: none; width: 22px; height: 22px; margin-top: 2px; color: var(--ember); }

/* ---------- Pilares ---------- */
.pillars { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.pillar { background: var(--panel); padding: 38px 32px; position: relative; transition: background .4s var(--ease); overflow: hidden; }
.pillar::after { content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0; background: var(--grad-heat); transition: width .5s var(--ease); }
.pillar:hover { background: var(--panel-2); }
.pillar:hover::after { width: 100%; }
.pillar .num { font-family: var(--f-mono); font-size: 12px; color: var(--ember); letter-spacing: .14em; }
.pillar .pic { width: 46px; height: 46px; margin: 22px 0 18px; color: var(--text); }
.pillar h3 { font-family: var(--f-display); font-weight: 700; font-size: 23px; letter-spacing: -.01em; margin-bottom: 12px; }
.pillar p { color: var(--text-dim); font-size: 15.5px; }
.pillar .badge { display: inline-block; margin-top: 16px; font-family: var(--f-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-mute); border: 1px solid var(--line-2); border-radius: 100px; padding: 5px 11px; }

/* ---------- Asistente Wh/kWh ---------- */
.assist { background: var(--bg-2); border-block: 1px solid var(--line); }
.assist-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.assist-form { display: grid; gap: 22px; }
.field label { display: block; font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 12px; }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  border: 1px solid var(--line-2); border-radius: 100px; padding: 9px 16px; font-size: 13.5px; color: var(--text-dim);
  transition: all .25s var(--ease);
}
.seg button:hover { border-color: var(--text-dim); color: var(--text); }
.seg button.active { background: var(--text); color: #07090c; border-color: var(--text); font-weight: 600; }
.range-wrap { margin-top: 6px; }
.range-wrap input[type=range] { width: 100%; -webkit-appearance: none; appearance: none; height: 4px; border-radius: 4px; background: var(--line-2); outline: none; }
.range-wrap input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%; background: var(--ember); border: 3px solid var(--bg-2); box-shadow: 0 0 0 1px var(--ember); cursor: pointer; }
.range-wrap input[type=range]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--ember); border: 3px solid var(--bg-2); cursor: pointer; }
.range-val { font-family: var(--f-mono); font-size: 30px; font-weight: 700; margin-top: 16px; }
.range-val span { color: var(--text-mute); font-size: 14px; }

/* Resultado del asistente */
.assist-result { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 30px; position: relative; min-height: 340px; }
.result-class { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 22px; }
.result-class .label { font-family: var(--f-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); }
.result-class .level { font-family: var(--f-display); font-weight: 700; font-size: 30px; letter-spacing: -.01em; transition: color .4s; }
.lvl-bar { height: 6px; border-radius: 6px; background: var(--line); overflow: hidden; margin-bottom: 26px; }
.lvl-bar i { display: block; height: 100%; width: 30%; border-radius: 6px; background: var(--grad-heat); transition: width .6s var(--ease), background .4s; }
.rec-list { display: grid; gap: 14px; }
.rec { display: flex; gap: 14px; align-items: flex-start; opacity: 0; transform: translateY(8px); transition: all .4s var(--ease); }
.rec.show { opacity: 1; transform: none; }
.rec .ic { flex: none; width: 34px; height: 34px; border-radius: 9px; background: var(--bg-2); border: 1px solid var(--line); display: grid; place-items: center; color: var(--contain); }
.rec .ic svg { width: 17px; height: 17px; }
.rec .t { font-weight: 600; font-size: 15px; }
.rec .d { color: var(--text-dim); font-size: 13.5px; margin-top: 2px; }
.assist-cta { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }

/* ---------- Sectores ---------- */
.sectors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.sector { position: relative; border: 1px solid var(--line); border-radius: var(--r); padding: 30px; overflow: hidden; background: var(--panel); transition: transform .45s var(--ease), border-color .45s var(--ease); min-height: 320px; display: flex; flex-direction: column; }
.sector:hover { transform: translateY(-6px); border-color: var(--line-2); }
.sector .scene { position: absolute; inset: 0; opacity: .5; z-index: 0; }
.sector .badge2 { font-family: var(--f-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ember); position: relative; z-index: 1; }
.sector h3 { font-family: var(--f-display); font-weight: 700; font-size: 24px; margin: 14px 0 10px; position: relative; z-index: 1; }
.sector p { color: var(--text-dim); font-size: 15px; position: relative; z-index: 1; flex: 1; }
.sector .go { margin-top: 20px; display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); font-weight: 600; position: relative; z-index: 1; }
.sector .go svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.sector:hover .go svg { transform: translateX(4px); }

/* ---------- Autoridad ---------- */
.authority { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.auth-cell { background: var(--panel); padding: 32px; }
.auth-cell .k { font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 14px; }
.auth-cell h4 { font-family: var(--f-display); font-weight: 700; font-size: 20px; margin-bottom: 8px; }
.auth-cell p { color: var(--text-dim); font-size: 14.5px; }
.auth-cell a.link { color: var(--ember); font-weight: 600; font-size: 14px; display: inline-flex; gap: 7px; align-items: center; margin-top: 12px; }

/* ---------- Contacto ---------- */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; }
.contact-info .big { font-family: var(--f-display); font-weight: 700; font-size: clamp(28px, 3.4vw, 40px); line-height: 1.05; letter-spacing: -.02em; }
.contact-channels { display: grid; gap: 14px; margin-top: 30px; }
.channel { display: flex; gap: 14px; align-items: center; padding: 16px; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--panel); transition: border-color .3s; }
.channel:hover { border-color: var(--line-2); }
.channel .ic { width: 40px; height: 40px; border-radius: 9px; background: var(--bg-2); display: grid; place-items: center; color: var(--ember); flex: none; }
.channel .ic svg { width: 18px; height: 18px; }
.channel .k { font-family: var(--f-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-mute); }
.channel .v { font-weight: 600; }

form.lead { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 30px; display: grid; gap: 18px; }
form.lead .row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
form.lead label { font-family: var(--f-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); display: block; margin-bottom: 8px; }
form.lead input, form.lead select, form.lead textarea {
  width: 100%; background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 13px 15px;
  color: var(--text); font-family: var(--f-body); font-size: 15px; transition: border-color .25s;
}
form.lead input:focus, form.lead select:focus, form.lead textarea:focus { outline: none; border-color: var(--ember); }
form.lead textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: 12.5px; color: var(--text-mute); }
.form-msg { font-size: 14px; padding: 12px 16px; border-radius: var(--r-sm); display: none; }
.form-msg.ok { display: block; background: rgba(33,224,182,.1); border: 1px solid var(--contain-d); color: var(--contain); }
.form-msg.err { display: block; background: rgba(255,106,44,.1); border: 1px solid var(--ember); color: var(--ember); }

/* ---------- Footer ---------- */
.foot { border-top: 1px solid var(--line); padding-block: 56px 32px; }
.foot-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.foot h5 { font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 16px; }
.foot ul { list-style: none; display: grid; gap: 10px; }
.foot ul a { color: var(--text-dim); font-size: 14px; transition: color .25s; }
.foot ul a:hover { color: var(--ember); }
.foot .desc { color: var(--text-dim); font-size: 14.5px; max-width: 300px; margin-top: 16px; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); }
.foot-bottom p { font-size: 13px; color: var(--text-mute); }
.foot-bottom .kwyro { font-family: var(--f-mono); font-size: 12px; color: var(--text-dim); }
.foot-bottom .kwyro a { color: var(--contain); }

/* ---------- Reveal animaciones ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner, .threat-grid, .assist-wrap, .contact-grid { grid-template-columns: 1fr; }
  .instr { order: -1; }
  .sectors { grid-template-columns: 1fr; }
  .pillars, .authority { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta .btn { display: none; }
  .nav-toggle { display: block; }
  .nav.open .nav-links { display: flex; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0; background: rgba(10,13,18,.96); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); padding: 8px var(--pad) 20px; }
  .nav.open .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  form.lead .row { grid-template-columns: 1fr; }
  .threat-stats { grid-template-columns: 1fr 1fr; }
  .foot-top { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}

/* ============================================================
   FX — capas atmosféricas y efectos (inyectadas por app.js)
   ============================================================ */
.hero, .section, .allies, .foot, .contact-grid { position: relative; z-index: 1; }

/* Aurora animada (blobs a la deriva, detrás del contenido) */
.fx-aurora { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.fx-aurora b { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; will-change: transform; }
.fx-aurora .b1 { width: 52vw; height: 52vw; top: -16vw; right: -8vw; background: radial-gradient(circle, rgba(255,106,44,.34), transparent 65%); animation: drift1 26s var(--ease) infinite alternate; }
.fx-aurora .b2 { width: 46vw; height: 46vw; bottom: -14vw; left: -10vw; background: radial-gradient(circle, rgba(33,224,182,.26), transparent 65%); animation: drift2 32s var(--ease) infinite alternate; }
.fx-aurora .b3 { width: 38vw; height: 38vw; top: 38%; left: 44%; background: radial-gradient(circle, rgba(26,169,255,.16), transparent 65%); animation: drift3 38s var(--ease) infinite alternate; }
@keyframes drift1 { to { transform: translate(-12vw, 14vh) scale(1.15); } }
@keyframes drift2 { to { transform: translate(14vw, -10vh) scale(1.2); } }
@keyframes drift3 { to { transform: translate(-10vw, -8vh) scale(.85); } }
@media (prefers-reduced-motion: reduce) { .fx-aurora b { animation: none; } }

/* Spotlight que sigue el cursor (glow sutil sobre el fondo) */
.fx-spotlight { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0; transition: opacity .6s ease;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255,176,32,.07), transparent 60%); }
.fx-spotlight.on { opacity: 1; }

/* Grano / textura de película (encima del contenido, sutil) */
.fx-grain { position: fixed; inset: 0; z-index: 2; pointer-events: none; opacity: .04; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

/* Barra de progreso de scroll */
.fx-progress { position: fixed; top: 0; left: 0; height: 2px; width: 100%; transform-origin: 0 50%; transform: scaleX(0); z-index: 200;
  background: linear-gradient(90deg, var(--contain), var(--ember-2), var(--ember)); box-shadow: 0 0 12px rgba(255,106,44,.5); }

/* Imagen de fondo del hero (macro celdas de litio) */
.hero-photo { position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: var(--hero-img, none) center/cover no-repeat; opacity: .30;
  mask-image: radial-gradient(120% 100% at 82% 12%, #000 0%, transparent 62%);
  -webkit-mask-image: radial-gradient(120% 100% at 82% 12%, #000 0%, transparent 62%);
  will-change: transform; }

/* Imagen de fondo de sección (campo de partículas) */
.assist { position: relative; overflow: hidden; }
.assist::before { content: ""; position: absolute; inset: 0; z-index: 0;
  background: var(--field-img, none) center/cover no-repeat; opacity: .18;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent); pointer-events: none; }
.assist .wrap { position: relative; z-index: 1; }

/* Glassmorphism en paneles */
.instr { background: linear-gradient(180deg, rgba(18,25,34,.72), rgba(14,19,24,.72)); backdrop-filter: blur(14px) saturate(140%); -webkit-backdrop-filter: blur(14px) saturate(140%); }
.assist-result { background: linear-gradient(180deg, rgba(18,25,34,.6), rgba(14,19,24,.6)); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); }

/* Glow que sigue el cursor dentro de cards */
.pillar, .sector { isolation: isolate; }
.pillar::before, .sector::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0; transition: opacity .4s ease;
  background: radial-gradient(260px circle at var(--mx, 50%) var(--my, 50%), rgba(255,106,44,.14), transparent 60%);
}
.pillar:hover::before, .sector:hover::before { opacity: 1; }
.pillar > *, .sector > * { position: relative; z-index: 1; }

/* Realce de titular hero con sheen sutil */
.hero h1 .hl { background: linear-gradient(180deg, #ffb86b, var(--ember)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Botón ember con brillo al hover */
.btn--ember { position: relative; overflow: hidden; }
.btn--ember::after { content: ""; position: absolute; top: 0; left: -120%; width: 60%; height: 100%; transform: skewX(-20deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent); transition: left .6s var(--ease); }
.btn--ember:hover::after { left: 140%; }

/* Halo en el panel instrumento */
.instr { box-shadow: 0 40px 90px -40px rgba(0,0,0,.85), 0 0 0 1px var(--line), 0 0 80px -30px rgba(255,106,44,.25); }