/* MIoT Solar · Manual de marca V1 (octubre 2026)
   Proporción: 60 % blanco, 30 % azules, 10 % dorado.
   Tipografía: Segoe UI, alternativa Arial. */
:root {
  --azul: #174385;
  --noche: #10243A;
  --dorado: #F5B820;
  --niebla: #F3F6FA;
  --gris: #526277;
  --blanco: #FFFFFF;
  --linea: #DCE3EC;
  --radio: 8px;
  --max: 1160px;
  --gutter: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  color: var(--noche);
  background: var(--blanco);
  -webkit-text-size-adjust: 100%;
}
img { max-width: 100%; height: auto; display: block; }
picture { display: block; }
a { color: var(--azul); }
h1, h2, h3 { font-weight: 700; line-height: 1.15; margin: 0; color: var(--noche); }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--gris); font-size: 15px; }
.muted--dark { color: #C5D0DE; font-size: 15px; }

:focus-visible { outline: 3px solid var(--dorado); outline-offset: 2px; }
.sec--night :focus-visible, .hero :focus-visible, .foot :focus-visible, .nav :focus-visible { outline-color: var(--dorado); }
.skip { position: absolute; left: -999px; top: 0; background: var(--dorado); color: var(--noche); padding: 10px 14px; font-weight: 700; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }

/* Botones: dorado con texto azul noche; nunca blanco sobre dorado */
.btn {
  display: inline-block; font: inherit; font-weight: 700; font-size: 16px;
  padding: 13px 22px; border-radius: 6px; text-decoration: none; text-align: center;
  border: 2px solid transparent; cursor: pointer; line-height: 1.2;
}
.btn--gold { background: var(--dorado); color: var(--noche); }
.btn--gold:hover { background: #FFC93C; }
.btn--ghost { background: transparent; color: var(--blanco); border-color: rgba(255,255,255,.55); }
.btn--ghost:hover { background: rgba(255,255,255,.08); border-color: var(--blanco); }
.btn--block { display: block; width: 100%; }

.bar { display: block; width: 72px; height: 6px; background: var(--dorado); margin-bottom: 22px; }
.bar--sm { width: 40px; height: 4px; margin-bottom: 16px; }

/* Banda de marca */
.brandband { background: var(--blanco); border-bottom: 1px solid var(--linea); }
.brandband__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 18px; padding-bottom: 18px; }
.brandband__logo { display: block; width: min(100%, 360px); }
.brandband__contact { list-style: none; display: flex; gap: 28px; font-size: 15px; }
.brandband__contact a { color: var(--azul); text-decoration: none; font-weight: 600; }
.brandband__contact a:hover { text-decoration: underline; }

/* Navegación */
.nav { position: sticky; top: 0; z-index: 50; background: var(--azul); }
.nav__in { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; }
.nav__menu { display: flex; gap: 6px; }
.nav__menu a { color: var(--blanco); text-decoration: none; font-weight: 600; font-size: 15px; padding: 8px 12px; border-radius: 6px; }
.nav__menu a:hover { background: rgba(255,255,255,.12); }
.nav__cta { padding: 9px 16px; font-size: 15px; }
.nav__toggle { display: none; background: transparent; color: var(--blanco); border: 2px solid rgba(255,255,255,.55); border-radius: 6px; font: inherit; font-weight: 600; padding: 7px 14px; cursor: pointer; }

/* Hero */
.hero { background: var(--noche); color: var(--blanco); }
.hero__in { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; padding-top: 72px; padding-bottom: 80px; align-items: center; }
.hero h1 { color: var(--blanco); font-size: clamp(34px, 5vw, 52px); letter-spacing: -.01em; margin-bottom: 22px; }
.lead { font-size: 19px; line-height: 1.55; color: #DCE5F0; max-width: 56ch; margin-bottom: 30px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__panel { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radio); padding: 26px 26px 14px; }
.hero__panel h2 { color: var(--blanco); font-size: 20px; margin-bottom: 14px; }
.hero__panel ol { list-style: none; counter-reset: p; }
.hero__panel li { counter-increment: p; display: grid; grid-template-columns: 26px 1fr; column-gap: 12px; padding: 11px 0; border-top: 1px solid rgba(255,255,255,.12); }
.hero__panel li::before { content: counter(p); color: var(--dorado); font-weight: 700; grid-row: span 2; }
.hero__panel strong { font-size: 16px; }
.hero__panel span { font-size: 14px; color: #C5D0DE; }

/* Secciones */
.sec { padding: 84px 0; }
.sec--mist { background: var(--niebla); }
.sec--night { background: var(--noche); color: var(--blanco); }
.sec--night h2, .sec--night h3 { color: var(--blanco); }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--azul); margin-bottom: 12px; }
.eyebrow--gold { color: var(--dorado); }
.sec h2 { font-size: clamp(28px, 3.6vw, 38px); margin-bottom: 14px; max-width: 24ch; }
.sec__lead { font-size: 18px; color: var(--gris); max-width: 62ch; margin-bottom: 40px; }
.sec--night .sec__lead { color: #C5D0DE; }

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--blanco); border: 1px solid var(--linea); border-radius: var(--radio); padding: 28px; }
.sec--mist .card { border-color: transparent; }
.card h3 { font-size: 22px; margin-bottom: 10px; color: var(--azul); }
.card__tag { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--gris); margin-bottom: 8px; }
.card--flat { background: var(--niebla); border-color: transparent; padding: 22px; }
.card--flat h3 { font-size: 18px; }
.card--flat p { font-size: 15.5px; color: var(--gris); margin: 0; }
.sec--mist .card--flat { background: var(--blanco); }
.link { font-weight: 700; }
.card .link { display: inline-block; margin-top: 14px; }
.card p:has(> .link) { margin: 0; }

.ticks { list-style: none; margin-top: 14px; }
.ticks li { position: relative; padding: 7px 0 7px 22px; border-top: 1px solid var(--linea); font-size: 16px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 16px; width: 10px; height: 4px; background: var(--dorado); }

.chips__title { font-size: 16px; margin: 44px 0 14px; color: var(--gris); font-weight: 600; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { background: var(--niebla); border: 1px solid var(--linea); border-radius: 999px; padding: 7px 16px; font-size: 15px; font-weight: 600; color: var(--azul); }

/* Ejemplos */
.badge { display: inline-block; background: var(--noche); color: var(--blanco); font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 5px 10px; border-radius: 4px; margin-bottom: 14px; }
.kv { margin: 16px 0; }
.kv div { display: flex; justify-content: space-between; gap: 12px; padding: 9px 0; border-top: 1px solid var(--linea); }
.kv dt { color: var(--gris); font-size: 15px; }
.kv dd { margin: 0; font-weight: 700; color: var(--noche); }
.card--ex > p:last-child { margin: 0; font-size: 15.5px; color: var(--gris); }
.note { font-size: 14px; color: var(--gris); max-width: 90ch; margin-top: 22px; }
.note--dark { color: #C5D0DE; margin-top: 16px; }

/* Pasos */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 44px; counter-reset: s; }
.steps li { border-top: 4px solid var(--dorado); padding-top: 16px; }
.steps__n { display: block; font-size: 14px; font-weight: 700; color: var(--azul); letter-spacing: .06em; margin-bottom: 6px; }
.steps h3 { font-size: 20px; margin-bottom: 8px; }
.steps p { font-size: 16px; color: var(--gris); margin: 0; }

/* Simulación */
.sim { display: grid; grid-template-columns: 1fr 1.1fr; gap: 24px; align-items: start; }
.sim__panel { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radio); padding: 28px; }
.sim__panel h3 { font-size: 22px; margin-bottom: 10px; }
.sim__label { display: block; margin: 18px 0 8px; font-size: 16px; color: #DCE5F0; }
.sim__label strong { color: var(--dorado); }
input[type="range"] { width: 100%; accent-color: var(--dorado); height: 28px; }
.sim__presets { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 18px; }
.sim__presets button { font: inherit; font-size: 14px; font-weight: 600; background: transparent; color: var(--blanco); border: 1px solid rgba(255,255,255,.4); border-radius: 999px; padding: 6px 14px; cursor: pointer; }
.sim__presets button:hover { border-color: var(--dorado); }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 18px 0 0; }
.metrics--2 { grid-template-columns: repeat(2, 1fr); }
.metrics div { background: rgba(255,255,255,.06); border-radius: 6px; padding: 14px; }
.metrics dt { font-size: 13px; color: #C5D0DE; margin-bottom: 4px; }
.metrics dd { margin: 0; font-size: 26px; font-weight: 700; color: var(--blanco); line-height: 1.1; }
.metrics small { font-size: 13px; font-weight: 400; color: #C5D0DE; }
#curve { width: 100%; height: auto; margin-top: 10px; }

/* Inversionistas */
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; background: var(--azul); color: var(--blanco); border-radius: var(--radio); padding: 32px; margin-top: 32px; }
.cta-band h3 { color: var(--blanco); font-size: 24px; margin-bottom: 6px; }
.cta-band p { margin: 0; color: #DCE5F0; }

/* Contacto */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact h2 { max-width: 20ch; }
.contact__list { list-style: none; border-top: 1px solid var(--linea); }
.contact__list li { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--linea); }
.contact__list span { color: var(--gris); font-size: 15px; }
.contact__list a { font-weight: 700; text-decoration: none; }
.contact__list a:hover { text-decoration: underline; }

.form { background: var(--blanco); border-radius: var(--radio); padding: 32px; border: 1px solid var(--linea); }
.form h3 { font-size: 24px; margin-bottom: 6px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-top: 16px; }
.field label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--noche); background: var(--blanco);
  border: 1.5px solid #9DAABB; border-radius: 6px; padding: 11px 12px;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--dorado); outline-offset: 0; border-color: var(--azul); }
.field [aria-invalid="true"] { border-color: #B42318; }
.form__err { color: #B42318; font-weight: 600; font-size: 15px; margin: 16px 0 0; }
.form .btn { margin-top: 20px; }
.form__alt { margin: 14px 0 0; text-align: center; }

/* Pie */
.foot { background: var(--noche); color: #DCE5F0; padding-top: 56px; }
.foot__in { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.foot__brand img { width: min(100%, 360px); margin-bottom: 14px; }
.foot__brand p { color: var(--dorado); font-weight: 700; margin: 0; }
.foot__nav, .foot__contact { display: flex; flex-direction: column; gap: 10px; list-style: none; }
.foot a { color: #DCE5F0; text-decoration: none; }
.foot a:hover { color: var(--blanco); text-decoration: underline; }
.foot__legal { border-top: 1px solid rgba(255,255,255,.14); padding-top: 22px; padding-bottom: 28px; font-size: 13.5px; color: #B6C3D3; }
.foot__legal p { margin: 0 0 8px; max-width: 100ch; }

/* WhatsApp: dorado de marca, sin verdes */
.wa { position: fixed; right: 16px; bottom: 16px; z-index: 60; background: var(--dorado); color: var(--noche); font-weight: 700; font-size: 15px; text-decoration: none; padding: 12px 18px; border-radius: 999px; border: 2px solid var(--noche); }
.wa:hover { background: #FFC93C; }

/* Responsive */
@media (max-width: 980px) {
  .hero__in, .sim, .contact { grid-template-columns: 1fr; gap: 36px; }
  .grid--3, .grid--4, .steps { grid-template-columns: repeat(2, 1fr); }
  .foot__in { grid-template-columns: 1fr 1fr; }
  .foot__brand { grid-column: 1 / -1; }
  .brandband__contact { display: none; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav__toggle { display: inline-block; }
  .nav__menu { display: none; position: absolute; left: 0; right: 0; top: 56px; background: var(--azul); flex-direction: column; padding: 8px var(--gutter) 16px; gap: 0; border-top: 1px solid rgba(255,255,255,.2); }
  .nav__menu.is-open { display: flex; }
  .nav__menu a { padding: 13px 8px; font-size: 16px; }
  .nav__in { position: relative; }
  .nav__cta { padding: 8px 12px; font-size: 14px; }
  .hero__in { padding-top: 48px; padding-bottom: 56px; }
  .sec { padding: 56px 0; }
  .grid--2, .grid--3, .grid--4, .steps, .form__row, .foot__in { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .metrics--2 { grid-template-columns: 1fr 1fr; }
  .cta-band { flex-direction: column; align-items: stretch; padding: 24px; }
  .card, .form, .sim__panel { padding: 22px; }
  .wa { padding: 10px 14px; font-size: 14px; right: 12px; bottom: 12px; }
  .wa__long { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Objetivos táctiles de al menos 24 px de alto en enlaces de texto */
.brandband__contact a, .contact__list a, .foot__contact a, .foot__nav a { display: inline-block; padding: 4px 0; }

/* Llave en mano */
.sec--ruled { border-top: 1px solid var(--linea); }
.turnkey { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: start; }
.phases { list-style: none; border-top: 1px solid var(--linea); }
.phases li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--linea); }
.phases__n { width: 36px; height: 36px; border-radius: 50%; background: var(--azul); color: var(--blanco); font-weight: 700; display: grid; place-items: center; }
.phases h3 { font-size: 20px; margin-bottom: 6px; }
.phases p { margin: 0; color: var(--gris); font-size: 16px; }
.turnkey__side { display: grid; gap: 16px; }
.turnkey__side .card { padding: 22px; background: var(--niebla); border-color: transparent; }
.turnkey__side .card h3 { font-size: 20px; }
.turnkey__side .ticks li { border-top-color: #CBD5E1; font-size: 15.5px; }
@media (max-width: 980px) { .turnkey { grid-template-columns: 1fr; gap: 28px; } }

/* Servicios */
.services { margin-bottom: 4px; }
.sub { font-size: 26px; margin: 56px 0 8px; }
.sec__lead--sm { font-size: 17px; margin-bottom: 24px; }
.services .card--flat h3 { color: var(--azul); }