/* ==========================================================================
   Zênite — Infraestrutura solar B2B
   Sistema: papel quente + tinta + um único laranja solar.
   ========================================================================== */

:root {
  --paper: #F2EFE7;
  --paper-2: #E8E4D8;
  --paper-3: #DDD8CA;
  --ink: #15140F;
  --ink-2: #47443C;
  --ink-3: #807B6F;
  --line: rgba(21, 20, 15, .14);
  --line-strong: rgba(21, 20, 15, .32);
  --sun: #FF4D00;
  --sun-ink: #C23A00;          /* laranja com contraste AA para texto pequeno */
  --sun-soft: rgba(255, 77, 0, .1);

  --night: #11110D;
  --night-2: #1B1B16;
  --night-3: #2A2A23;
  --night-line: rgba(242, 239, 231, .12);
  --night-ink: #F2EFE7;
  --night-ink-2: #A9A597;

  --ok: #3E8E5A;
  --warn: #D99A1E;

  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --sans: "Schibsted Grotesk", "Helvetica Neue", sans-serif;
  --mono: "Martian Mono", ui-monospace, "SFMono-Regular", monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1360px;
  --ease: cubic-bezier(.2, .7, .1, 1);
  --ease-io: cubic-bezier(.65, 0, .35, 1);
  --topbar-h: 68px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar-h) + 12px); }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
body::before { /* grão de papel */
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 100;
  opacity: .28;
  mix-blend-mode: multiply;
  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' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.45 0 0 0 0 0.42 0 0 0 0 0.36 0 0 0 .35 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, p, ol, ul, dl, dd, figure { margin: 0; padding: 0; }
ol, ul { list-style: none; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
legend { padding: 0; }
::selection { background: var(--sun); color: var(--paper); }
:focus-visible { outline: 2px solid var(--sun); outline-offset: 3px; border-radius: 2px; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 200; background: var(--ink); color: var(--paper); padding: 10px 14px; border-radius: 6px; }
.skip:focus { top: 12px; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 24px; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
@media (max-width: 900px) {
  .grid-12 { grid-template-columns: 1fr; row-gap: 24px; }
  .grid-12 > * { grid-column: 1 / -1; }
}

.section { padding-block: clamp(88px, 12vw, 168px); border-top: 1px solid var(--line); }
.section__intro { margin-bottom: clamp(48px, 6vw, 80px); }

/* ---------- Typography ---------- */
.label {
  font: 400 11px/1.4 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.label b { font-weight: 500; color: var(--sun-ink); margin-right: .9em; }
.label--muted { color: var(--ink-3); }

.h2, .display, .hero__title {
  font-family: var(--serif);
  font-weight: 300;
  font-optical-sizing: auto;
  letter-spacing: -.022em;
  text-wrap: balance;
}
.h2 { font-size: clamp(2rem, 4.3vw, 3.9rem); line-height: 1.04; }
.h2 em, .display em, .hero__title em { font-style: italic; color: var(--sun); }
.h3 { font: 400 clamp(1.4rem, 2vw, 1.75rem)/1.2 var(--serif); letter-spacing: -.01em; }
.display { font-size: clamp(2.6rem, 6vw, 5.6rem); line-height: .98; }

/* ---------- Buttons ---------- */
.btn {
  --bg: transparent; --fg: var(--ink); --bd: var(--line-strong);
  display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  height: 52px; padding: 0 24px;
  background: var(--bg); color: var(--fg);
  border: 1px solid var(--bd); border-radius: 999px;
  font: 500 15px/1 var(--sans); letter-spacing: -.005em;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
  position: relative; overflow: hidden; isolation: isolate;
}
.btn span[aria-hidden] { transition: transform .35s var(--ease); }
.btn:hover span[aria-hidden] { transform: translateX(4px); }
.btn--sun { --bg: var(--sun); --fg: #fff; --bd: var(--sun); }
.btn--sun::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--ink); transform: translateY(101%); transition: transform .45s var(--ease);
}
.btn--sun:hover::before { transform: none; }
.btn--sun:hover { --bd: var(--ink); }
.btn--ink { --bg: var(--ink); --fg: var(--paper); --bd: var(--ink); }
.btn--ink:hover { --bg: var(--sun); --bd: var(--sun); --fg: #fff; }
.btn--ghost:hover { --bd: var(--ink); --bg: var(--ink); --fg: var(--paper); }
.btn--sm { height: 40px; padding: 0 18px; font-size: 14px; }
.btn--block { width: 100%; }
.btn:active { transform: scale(.98); }

.chip {
  font: 400 11px/1 var(--mono); letter-spacing: .05em; text-transform: uppercase;
  padding: 8px 12px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--sun); background: var(--sun-soft); color: var(--sun-ink);
}
.chip:hover { background: var(--sun); color: #fff; }

/* ---------- Topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.topbar.is-scrolled { border-bottom-color: var(--line); }
.topbar__inner { height: 100%; display: flex; align-items: center; gap: 28px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand__mark { width: 28px; height: 28px; fill: none; stroke: var(--ink); stroke-width: 1.6; }
.brand__mark circle { fill: var(--sun); stroke: none; }
.brand__word { font: 400 26px/1 var(--serif); letter-spacing: -.02em; }

.readout {
  display: flex; align-items: center; gap: 10px;
  font: 400 11px/1 var(--mono); letter-spacing: .03em; color: var(--ink-2);
  padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px;
  white-space: nowrap;
}
.readout b { font-weight: 500; color: var(--ink); }
.readout__sep { color: var(--ink-3); }
.readout__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--sun); box-shadow: 0 0 0 0 var(--sun); animation: ping 2.4s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(255,77,0,.5); } 70%,100% { box-shadow: 0 0 0 7px rgba(255,77,0,0); } }

.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-size: 15px; color: var(--ink-2); position: relative; padding-block: 6px; transition: color .2s; }
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease); }
.nav a:hover, .nav a.is-active { color: var(--ink); }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); transform-origin: left; }

.menu-toggle { display: none; width: 44px; height: 44px; margin-left: auto; border: 1px solid var(--line-strong); border-radius: 50%; background: none; cursor: pointer; position: relative; }
.menu-toggle i { position: absolute; left: 13px; right: 13px; height: 1.5px; background: var(--ink); transition: transform .35s var(--ease); }
.menu-toggle i:first-of-type { top: 18px; }
.menu-toggle i:last-of-type { top: 24px; }
.menu-toggle[aria-expanded="true"] i:first-of-type { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] i:last-of-type { transform: translateY(-3px) rotate(-45deg); }

@media (max-width: 1180px) { .readout { display: none; } }
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .topbar__cta { display: none; }
  .nav {
    position: fixed; inset: var(--topbar-h) 0 auto 0;
    flex-direction: column; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 24px;
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .3s, transform .3s var(--ease), visibility .3s;
  }
  .nav.is-open { opacity: 1; transform: none; visibility: visible; }
  .nav a { font: 300 30px/1 var(--serif); padding: 16px 0; border-bottom: 1px solid var(--line); color: var(--ink); }
  .nav a::after { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; isolation: isolate;
  padding-block: clamp(40px, 6vw, 88px) clamp(56px, 7vw, 104px);
  min-height: min(calc(100svh - var(--topbar-h)), 860px);
  display: flex; align-items: center;
}
.hero::before { /* luz difusa do sol atrás do instrumento */
  content: ""; position: absolute; z-index: -1; pointer-events: none;
  right: -10vw; top: -8vw; width: 62vw; height: 62vw; max-width: 900px; max-height: 900px;
  background: radial-gradient(closest-side, rgba(255, 77, 0, .10), rgba(255, 77, 0, .03) 55%, transparent);
}
.hero__grid {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(40px, 5vw, 88px); align-items: center;
}
.hero__copy { display: flex; flex-direction: column; align-items: flex-start; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 400 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2);
  padding: 9px 14px 9px 12px; border: 1px solid var(--line-strong); border-radius: 999px;
}
.hero__eyebrow i { width: 7px; height: 7px; border-radius: 50%; background: var(--sun); }

.hero__title {
  font-size: clamp(2.5rem, 4.7vw, 4.6rem);
  line-height: 1;
  letter-spacing: -.03em;
  margin-top: 28px;
  max-width: 13ch;
}
.hero__title em { white-space: nowrap; }
.hero__lede { margin-top: 24px; max-width: 40ch; font-size: clamp(17px, 1.3vw, 19px); line-height: 1.5; color: var(--ink-2); }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 36px; }

.hero__trust {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); width: 100%;
}
.hero__trust li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-2); }
.hero__trust li::before {
  content: ""; width: 12px; height: 7px; flex: none;
  border-left: 1.5px solid var(--sun); border-bottom: 1.5px solid var(--sun);
  transform: translateY(-2px) rotate(-45deg);
}

@media (max-width: 1000px) {
  .hero { min-height: 0; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero__title { max-width: 13ch; }
}

/* Instrumento solar (cartão) */
.instrument {
  position: relative;
  background: color-mix(in srgb, #fff 45%, var(--paper));
  border: 1px solid var(--line-strong); border-radius: 22px;
  padding: 20px 22px 16px;
  box-shadow: 0 1px 0 rgba(255,255,255,.7) inset, 0 40px 80px -48px rgba(60, 40, 10, .35);
}
.instrument__head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.instrument__title { display: flex; align-items: center; gap: 10px; font: 400 17px/1 var(--serif); letter-spacing: -.005em; }
.instrument__live { width: 8px; height: 8px; border-radius: 50%; background: var(--sun); animation: ping 2.4s infinite; }
.instrument__stage { position: relative; height: clamp(220px, 22vw, 300px); margin-top: 18px; touch-action: pan-y; }
.instrument__now { position: absolute; top: 0; left: 50%; transform: translateX(-50%); z-index: 2; }
.sunpath { width: 100%; height: 100%; overflow: visible; }
.sunpath__grid line { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.sunpath__grid text, .sunpath text { font: 400 10px var(--mono); fill: var(--ink-3); letter-spacing: .04em; }
.sunpath__horizon { stroke: var(--ink); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.sunpath__day { fill: none; stroke: var(--ink); stroke-width: 1.6; vector-effect: non-scaling-stroke; }
.sunpath__night { fill: none; stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 3 5; vector-effect: non-scaling-stroke; }
.sunpath__energy { transition: d .2s linear; }
.sunpath__plumb { stroke: var(--sun); stroke-width: 1; stroke-dasharray: 2 4; vector-effect: non-scaling-stroke; }
.sunpath__disc { fill: var(--sun); }
.sunpath__glow { animation: breathe 4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.sunpath__sun.is-below .sunpath__disc { fill: var(--paper); stroke: var(--ink-3); stroke-width: 1.4; vector-effect: non-scaling-stroke; }
.sunpath__sun.is-below .sunpath__glow { display: none; }
@keyframes breathe { 50% { transform: scale(1.25); opacity: .6; } }
.tick line { stroke: var(--ink); stroke-width: 1; vector-effect: non-scaling-stroke; }

.instrument__stage { cursor: ew-resize; }
.scrub { position: absolute; inset: 0; pointer-events: none; border-radius: 4px; }
.scrub input { width: 100%; height: 100%; opacity: 0; margin: 0; pointer-events: none; }
.scrub:has(input:focus-visible) { outline: 2px solid var(--sun); outline-offset: 4px; }

.readings {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-top: 14px;
}
.readings > div { padding: 14px 14px 14px 0; min-width: 0; }
.readings > div:not(:nth-child(3n+1)) { padding-left: 14px; border-left: 1px solid var(--line); }
.readings > div:nth-child(n+4) { border-top: 1px solid var(--line); }
.readings dt { font: 400 10px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.readings dd { font: 300 clamp(19px, 1.7vw, 24px)/1.1 var(--serif); margin-top: 6px; font-variant-numeric: tabular-nums; letter-spacing: -.01em; white-space: nowrap; }
.readings small { font: 400 11px var(--mono); color: var(--ink-3); }
.instrument__hint { margin-top: 12px; font: 400 11px/1.4 var(--mono); color: var(--ink-3); letter-spacing: .01em; }
.instrument__hint span { color: var(--sun-ink); margin-right: 4px; }
@media (max-width: 520px) {
  .instrument { padding: 16px 14px 12px; border-radius: 18px; }
  .readings { grid-template-columns: repeat(2, 1fr); }
  .readings > div:not(:nth-child(3n+1)) { border-left: 0; padding-left: 0; }
  .readings > div:nth-child(even) { border-left: 1px solid var(--line); padding-left: 14px; }
  .readings > div:nth-child(n+3) { border-top: 1px solid var(--line); }
}

/* ---------- Proof ---------- */
.proof { border-top: 1px solid var(--line); }
.proof__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: clamp(28px, 4vw, 48px) 24px clamp(28px, 4vw, 48px) 0; }
.stat + .stat { padding-left: 24px; border-left: 1px solid var(--line); }
.stat__n { font: 300 clamp(3rem, 6vw, 5.4rem)/.9 var(--serif); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.stat__u { font: 400 12px var(--mono); margin-left: 8px; color: var(--sun-ink); vertical-align: top; }
.stat p { margin-top: 12px; color: var(--ink-2); font-size: 15px; }
@media (max-width: 900px) {
  .proof__grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
}

.ticker { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; background: var(--ink); color: var(--paper); }
.ticker__track { display: flex; width: max-content; animation: marquee 48s linear infinite; }
.ticker span { font: 300 italic clamp(20px, 2.4vw, 30px)/1 var(--serif); padding: 20px 28px; white-space: nowrap; display: flex; align-items: center; gap: 56px; }
.ticker span::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--sun); margin-left: 28px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Contexto ---------- */
.pains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: clamp(48px, 6vw, 80px); counter-reset: p; }
.pains li { border-top: 1px solid var(--ink); padding-top: 18px; }
.pains__n { font: italic 300 22px/1 var(--serif); color: var(--sun); }
.pains h3 { font: 500 18px/1.3 var(--sans); margin: 18px 0 10px; letter-spacing: -.01em; }
.pains p { color: var(--ink-2); font-size: 16px; }
@media (max-width: 760px) { .pains { grid-template-columns: 1fr; } }

/* ---------- Modelos (spec sheet) ---------- */
.spec { border-top: 1px solid var(--ink); }
.spec__row { display: grid; grid-template-columns: 1.1fr repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.spec__key { padding: 22px 16px 22px 0; font: 400 11px/1.5 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--ink-3); }
.spec__col { padding: 22px 20px; font-size: 16px; color: var(--ink-2); transition: background .3s; position: relative; }
.spec__col b { font: 400 22px/1.2 var(--serif); color: var(--ink); display: block; margin-bottom: 4px; letter-spacing: -.01em; }
.spec__col.is-featured { background: var(--paper-2); }
.spec__col.is-hover { background: var(--paper-3); }
.spec__row--head .spec__col { padding-top: 28px; padding-bottom: 28px; }
.spec__row--head h3 { font: 400 clamp(22px, 2.2vw, 30px)/1.1 var(--serif); letter-spacing: -.015em; color: var(--ink); }
.spec__row--head small { display: block; font: 400 11px/1.4 var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--ink-3); margin-top: 8px; }
.spec__tag { display: inline-grid; place-items: center; width: 26px; height: 26px; border: 1px solid var(--line-strong); border-radius: 50%; font: 400 11px var(--mono); margin-bottom: 18px; }
.is-featured .spec__tag { background: var(--sun); border-color: var(--sun); color: #fff; }
.spec__flag { position: absolute; top: 28px; right: 20px; font: 400 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--sun-ink); }
.spec__row--head .is-featured { box-shadow: inset 0 3px 0 var(--sun); }

@media (max-width: 900px) {
  .spec { border-top: 0; display: grid; gap: 16px; }
  .spec__row, .spec__row--head { display: contents; }
  .spec__key { display: none; }
  .spec__col { border: 1px solid var(--line); border-radius: 12px; }
  .spec__row--head .spec__col { display: none; }
  .spec__col[data-k]::before {
    content: attr(data-k); display: block; margin-bottom: 8px;
    font: 400 10px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
  }
  /* cada coluna vira um cartão (ordem definida em JS) */
  .spec { grid-template-columns: 1fr; }
  .spec__col[data-col] { border-radius: 0; border-top: 0; }
}
.spec__m { display: none; }
@media (max-width: 900px) {
  .spec__m { display: block; padding: 24px 20px 20px; border: 1px solid var(--line); border-bottom: 0; border-radius: 12px 12px 0 0; margin-top: 16px; }
  .spec__m.is-featured { background: var(--paper-2); box-shadow: inset 0 3px 0 var(--sun); }
  .spec__m h3 { font: 400 26px/1.1 var(--serif); letter-spacing: -.015em; }
  .spec__m small { display: block; font: 400 11px var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--ink-3); margin-top: 6px; }
  .spec__col.is-last { border-radius: 0 0 12px 12px; }
  .spec { gap: 0; }
}

/* ---------- Simulador ---------- */
.sim__panel {
  display: grid; grid-template-columns: minmax(300px, 4fr) 8fr;
  border: 1px solid var(--ink); border-radius: 20px; overflow: hidden;
  background: var(--paper);
}
.sim__inputs { padding: clamp(24px, 3vw, 40px); border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 32px; background: var(--paper-2); }
.field { display: flex; flex-direction: column; gap: 12px; }
.field label, .field legend { font-size: 15px; font-weight: 500; }
.field legend { margin-bottom: 12px; }
.field__top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.field output { font: 400 13px var(--mono); color: var(--sun-ink); font-variant-numeric: tabular-nums; }
.field__scale { display: flex; justify-content: space-between; font: 400 10px var(--mono); color: var(--ink-3); letter-spacing: .03em; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; cursor: pointer; margin: 0;
  --p: 50%;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 2px; background: linear-gradient(to right, var(--ink) var(--p), var(--line-strong) var(--p));
}
input[type="range"]::-moz-range-track { height: 2px; background: var(--line-strong); }
input[type="range"]::-moz-range-progress { height: 2px; background: var(--ink); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%; margin-top: -10px;
  background: var(--paper); border: 1.5px solid var(--ink); box-shadow: inset 0 0 0 5px var(--paper), inset 0 0 0 11px var(--sun);
  transition: transform .2s var(--ease);
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--sun); border: 1.5px solid var(--ink); box-shadow: inset 0 0 0 4px var(--paper);
}
input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.15); }

.select { position: relative; }
.select::after { content: ""; position: absolute; right: 16px; top: 50%; width: 7px; height: 7px; border-right: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); transform: translateY(-70%) rotate(45deg); pointer-events: none; }
.select select { -webkit-appearance: none; appearance: none; width: 100%; height: 48px; padding: 0 40px 0 16px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--paper); cursor: pointer; font-size: 15px; }
.select select:hover { border-color: var(--ink); }

.segmented { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--paper); }
.segmented label, .pills label { position: relative; cursor: pointer; }
.segmented input, .pills input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.segmented span { display: grid; place-items: center; height: 40px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--ink-2); transition: background .25s, color .25s; }
.segmented input:checked + span { background: var(--ink); color: var(--paper); }
.segmented input:focus-visible + span, .pills input:focus-visible + span { outline: 2px solid var(--sun); outline-offset: 2px; }
.sim__note { margin-top: auto; font: 400 11px/1.6 var(--mono); color: var(--ink-3); letter-spacing: .01em; }

.sim__results { padding: clamp(24px, 3vw, 40px); display: flex; flex-direction: column; gap: 32px; min-width: 0; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.kpi { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); min-width: 0; }
.kpi:not(.kpi--hero):not(:nth-child(3n+2)) { padding-left: 16px; border-left: 1px solid var(--line); }
.kpi strong { display: block; margin-top: 8px; font: 300 clamp(22px, 2.2vw, 30px)/1.1 var(--serif); letter-spacing: -.015em; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi--hero { grid-column: 1 / -1; padding-bottom: 24px; }
.kpi--hero strong { font-size: clamp(44px, 6.4vw, 92px); line-height: .95; letter-spacing: -.04em; color: var(--ink); }
.kpi--hero strong .cur { font-size: .42em; letter-spacing: 0; color: var(--ink-3); margin-right: .2em; vertical-align: .9em; }

.cashflow__cap, .gen__cap { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.legend { display: flex; align-items: center; gap: 6px 18px; font-size: 13px; color: var(--ink-2); flex-wrap: wrap; }
.legend > span { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.legend i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.legend__neg { background: var(--ink-3); }
.legend__pos { background: var(--sun); }
.cashflow__plot { position: relative; height: 240px; }
.cashflow__plot svg { width: 100%; height: 100%; overflow: visible; }
.cashflow__axis, .gen__axis { display: flex; justify-content: space-between; font: 400 10px var(--mono); color: var(--ink-3); margin-top: 10px; letter-spacing: .03em; }
.cf-bar { transition: y .5s var(--ease), height .5s var(--ease), fill .3s, opacity .2s; }
.cf-bar.neg { fill: var(--ink-3); }
.cf-bar.pos { fill: var(--sun); }
.cashflow__plot:hover .cf-bar { opacity: .45; }
.cashflow__plot:hover .cf-bar.is-hot { opacity: 1; }
.cf-zero { stroke: var(--ink); stroke-width: 1; vector-effect: non-scaling-stroke; }
.cf-grid { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.cf-payback { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 3 4; vector-effect: non-scaling-stroke; }
.cf-flag {
  position: absolute; top: -6px; transform: translateX(-50%);
  font: 400 10px/1 var(--mono); letter-spacing: .04em; text-transform: uppercase;
  background: var(--ink); color: var(--paper); padding: 6px 8px; border-radius: 4px; white-space: nowrap; pointer-events: none;
  transition: left .5s var(--ease);
}

.tip {
  position: absolute; pointer-events: none; z-index: 5;
  background: var(--ink); color: var(--paper);
  padding: 10px 12px; border-radius: 8px;
  font: 400 12px/1.5 var(--mono); white-space: nowrap;
  transform: translate(-50%, calc(-100% - 12px));
  box-shadow: 0 10px 30px -10px rgba(0,0,0,.4);
}
.tip b { font-weight: 500; display: block; font-size: 10px; letter-spacing: .06em; text-transform: uppercase; opacity: .7; }
.tip--dark { background: var(--night-ink); color: var(--night); }

@media (max-width: 1000px) {
  .sim__panel { grid-template-columns: 1fr; }
  .sim__inputs { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .kpis { grid-template-columns: 1fr 1fr; }
  .kpi:not(.kpi--hero):not(:nth-child(3n+2)) { padding-left: 0; border-left: 0; }
  .kpi:not(.kpi--hero):nth-child(odd) { padding-left: 16px; border-left: 1px solid var(--line); }
  .cashflow__plot { height: 200px; }
}

/* ---------- Método ---------- */
.method__sticky { position: sticky; top: calc(var(--topbar-h) + 40px); align-self: start; display: flex; flex-direction: column; gap: 28px; }
.method__progress { height: 2px; background: var(--line); position: relative; max-width: 360px; }
.method__progress span { position: absolute; inset: 0; background: var(--sun); transform-origin: left; transform: scaleX(0); }
.steps { counter-reset: s; }
.step {
  display: grid; grid-template-columns: 110px 1fr; gap: 24px;
  padding: 36px 0; border-top: 1px solid var(--line);
  opacity: .38; transition: opacity .6s var(--ease);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step.is-active, .step.is-past { opacity: 1; }
.step__day { font: 400 13px/1 var(--mono); color: var(--ink-3); padding-top: 10px; transition: color .4s; }
.step.is-active .step__day { color: var(--sun-ink); }
.step h3 { font: 300 clamp(26px, 2.8vw, 38px)/1.1 var(--serif); letter-spacing: -.02em; }
.step p { margin-top: 14px; color: var(--ink-2); max-width: 52ch; }
.step__deliv { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.step__deliv li { font: 400 11px/1 var(--mono); letter-spacing: .02em; padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--ink-2); }
@media (max-width: 900px) {
  .method__sticky { position: static; }
  .step { grid-template-columns: 1fr; gap: 10px; opacity: 1; }
}

/* ---------- Observa (noite) ---------- */
.observa {
  background: var(--night); color: var(--night-ink);
  padding-block: clamp(88px, 12vw, 168px);
  position: relative; overflow: hidden;
}
.observa::before { /* horizonte sutil */
  content: ""; position: absolute; left: 50%; top: -40vw; width: 120vw; height: 60vw; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(255,77,0,.14), transparent 70%);
  pointer-events: none;
}
.observa .label { color: var(--night-ink-2); }
.observa .label b { color: var(--sun); }
.observa .h2 em { color: var(--sun); }

.console {
  position: relative;
  border: 1px solid var(--night-line); border-radius: 18px;
  background: linear-gradient(180deg, var(--night-2), var(--night));
  box-shadow: 0 40px 120px -40px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.05);
  overflow: hidden;
}
.console__bar { display: flex; align-items: center; gap: 16px; padding: 14px 20px; border-bottom: 1px solid var(--night-line); }
.console__dots { display: flex; gap: 6px; }
.console__dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--night-3); }
.console__live { margin-left: auto; display: flex; align-items: center; gap: 8px; font: 400 11px var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--night-ink-2); }
.console__live i { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); animation: ping-ok 2s infinite; }
.console__live.is-idle i { background: var(--night-ink-2); animation: none; }
@keyframes ping-ok { 0% { box-shadow: 0 0 0 0 rgba(62,142,90,.6); } 70%,100% { box-shadow: 0 0 0 7px rgba(62,142,90,0); } }
.console__body { display: grid; grid-template-columns: 1fr; }
.console__kpis { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--night-line); }
.console__kpis > div { padding: 22px 20px; }
.console__kpis > div + div { border-left: 1px solid var(--night-line); }
.console__kpis strong { display: block; margin-top: 10px; font: 300 clamp(28px, 3.2vw, 44px)/1 var(--serif); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.console__kpis small { font: 400 12px var(--mono); color: var(--night-ink-2); letter-spacing: 0; }

.gen { padding: 24px 20px 20px; }
.legend--dark { color: var(--night-ink-2); }
.legend__line { height: 2px !important; width: 16px !important; background: var(--sun); border-radius: 0 !important; }
.legend__dash { height: 0 !important; width: 16px !important; border-top: 2px dashed var(--night-ink-2); border-radius: 0 !important; }
.gen__plot { position: relative; height: clamp(200px, 24vw, 300px); cursor: crosshair; }
.gen__plot svg { width: 100%; height: 100%; overflow: visible; }
.gen__axis { color: var(--night-ink-2); }
.g-grid { stroke: var(--night-line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.g-line { fill: none; stroke: var(--sun); stroke-width: 2; vector-effect: non-scaling-stroke; stroke-linejoin: round; }
.g-fore { fill: none; stroke: var(--night-ink-2); stroke-width: 1.5; stroke-dasharray: 4 5; vector-effect: non-scaling-stroke; }
.g-cross { stroke: var(--night-ink); stroke-width: 1; vector-effect: non-scaling-stroke; opacity: .5; }
.g-now { stroke: var(--sun); stroke-width: 1; stroke-dasharray: 2 3; vector-effect: non-scaling-stroke; }
.g-ylab { position: absolute; left: 0; font: 400 10px var(--mono); color: var(--night-ink-2); transform: translateY(-120%); }
.g-dot {
  position: absolute; width: 12px; height: 12px; border-radius: 50%; transform: translate(-50%, -50%);
  background: var(--sun); box-shadow: 0 0 0 3px var(--night-2), 0 0 24px 6px rgba(255,77,0,.5); pointer-events: none;
}
.g-dot--hover { background: var(--night-ink); box-shadow: 0 0 0 3px var(--night-2); width: 10px; height: 10px; }

.inverters { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--night-line); }
.inverters li { display: grid; gap: 10px; padding: 18px 20px; font-size: 13px; }
.inverters li + li { border-left: 1px solid var(--night-line); }
.inv__id { font: 400 11px var(--mono); letter-spacing: .05em; color: var(--night-ink-2); }
.inv__bar { height: 4px; background: var(--night-3); border-radius: 4px; overflow: hidden; }
.inv__bar i { display: block; height: 100%; width: calc(var(--v) * 100%); background: var(--night-ink); border-radius: 4px; transform-origin: left; }
.inv__st { display: flex; align-items: center; gap: 8px; color: var(--night-ink); }
.inv__st::before { content: ""; width: 8px; height: 8px; border-radius: 50%; flex: none; }
.inv__st--ok::before { background: var(--ok); }
.inv__st--warn::before { background: var(--warn); border-radius: 1px; transform: rotate(45deg); width: 7px; height: 7px; }

.observa__features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: clamp(48px, 6vw, 80px); }
.observa__features li { border-top: 1px solid var(--night-line); padding-top: 20px; }
.observa__features h3 { font: 400 24px/1.2 var(--serif); letter-spacing: -.01em; }
.observa__features p { margin-top: 10px; color: var(--night-ink-2); font-size: 16px; }

@media (max-width: 900px) {
  .console__dots { display: none; }
  .console__live { white-space: nowrap; }
  .console__kpis, .inverters { grid-template-columns: 1fr 1fr; }
  .console__kpis > div:nth-child(3), .inverters li:nth-child(3) { border-left: 0; }
  .console__kpis > div:nth-child(n+3), .inverters li:nth-child(n+3) { border-top: 1px solid var(--night-line); }
  .observa__features { grid-template-columns: 1fr; }
}

/* ---------- Projetos ---------- */
.case-list { display: grid; gap: 0; border-top: 1px solid var(--ink); }
.case {
  display: grid; grid-template-columns: 70px minmax(0, 5fr) minmax(0, 6fr); gap: 32px;
  padding: clamp(32px, 4vw, 56px) 0; border-bottom: 1px solid var(--line);
  align-items: start;
}
.case__n { font: 400 12px var(--mono); color: var(--ink-3); padding-top: 12px; }
.case__seg { font: 400 11px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--sun-ink); }
.case h3 { font: 300 clamp(30px, 3.4vw, 48px)/1.02 var(--serif); letter-spacing: -.025em; margin: 12px 0 16px; }
.case__desc { color: var(--ink-2); max-width: 46ch; }
.case__data { display: grid; grid-template-columns: 1fr 1fr; margin-top: 28px; border-top: 1px solid var(--line); }
.case__data div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.case__data div:nth-child(even) { padding-left: 16px; border-left: 1px solid var(--line); }
.case__data dt { font: 400 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.case__data dd { font: 300 24px/1.1 var(--serif); margin-top: 6px; letter-spacing: -.01em; }

.plan { position: relative; background: var(--paper-2); border-radius: 14px; padding: 20px; overflow: hidden; }
.plan svg { width: 100%; height: auto; }
.plan__roof { fill: var(--paper); stroke: var(--ink); stroke-width: 1; vector-effect: non-scaling-stroke; }
.plan__obst { fill: var(--paper-3); stroke: var(--ink-3); stroke-width: .8; vector-effect: non-scaling-stroke; }
.plan__pv { fill: var(--paper-3); transition: fill .5s var(--ease); }
.plan.is-lit .plan__pv { fill: var(--ink); }
.plan.is-lit .plan__pv.hot { fill: var(--sun); }
.plan__meta { display: flex; justify-content: space-between; gap: 16px; text-align: right; margin-top: 14px; font: 400 10px var(--mono); letter-spacing: .05em; text-transform: uppercase; color: var(--ink-3); }
.plan .plan__north { position: absolute; top: 20px; right: 20px; width: 34px; height: 34px; }
.plan__north circle { fill: var(--paper); stroke: var(--line-strong); }
.plan__north path { fill: var(--ink); }
.plan__north text { font: 500 8px var(--mono); fill: var(--ink); }

@media (max-width: 900px) {
  .case { grid-template-columns: 1fr; gap: 20px; }
  .case__n { padding-top: 0; }
}

/* ---------- FAQ ---------- */
.faq__title { margin-top: 24px; max-width: 18ch; color: var(--ink-2); }
.faq__list { border-top: 1px solid var(--ink); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 26px 0; font: 400 clamp(20px, 1.9vw, 25px)/1.25 var(--serif); letter-spacing: -.01em;
  transition: color .2s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--sun-ink); }
.faq summary i { position: relative; flex: none; width: 32px; height: 32px; border: 1px solid var(--line-strong); border-radius: 50%; transition: transform .4s var(--ease), background .3s, border-color .3s; }
.faq summary i::before, .faq summary i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 11px; height: 1.5px; background: currentColor; transform: translate(-50%, -50%); }
.faq summary i::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq details[open] summary i { transform: rotate(45deg); background: var(--ink); color: var(--paper); border-color: var(--ink); }
.faq details p { padding: 0 64px 28px 0; color: var(--ink-2); max-width: 64ch; }
.faq details[open] p { animation: fadeDown .5s var(--ease); }
@keyframes fadeDown { from { opacity: 0; transform: translateY(-6px); } }

/* ---------- Contato ---------- */
.contact { padding-block: clamp(88px, 12vw, 168px); background: var(--paper-2); border-top: 1px solid var(--line); }
.contact__copy { display: flex; flex-direction: column; gap: 28px; padding-right: clamp(0px, 4vw, 64px); }
.contact__copy > p { color: var(--ink-2); max-width: 44ch; font-size: 18px; }
.contact__direct { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: auto; padding-top: 24px; border-top: 1px solid var(--line); }
.contact__direct dt { font: 400 10px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.contact__direct dd { margin-top: 6px; font-size: 16px; }

.form { background: var(--paper); border: 1px solid var(--ink); border-radius: 20px; padding: clamp(24px, 3vw, 40px); display: flex; flex-direction: column; gap: 16px; position: relative; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 520px) { .form__row { grid-template-columns: 1fr; } }
.input { position: relative; }
.input input {
  width: 100%; height: 60px; padding: 22px 16px 6px;
  border: 1px solid var(--line-strong); border-radius: 10px; background: var(--paper);
  font-size: 16px; transition: border-color .2s, box-shadow .2s;
}
.input input:hover { border-color: var(--ink-2); }
.input input:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px var(--sun-soft); }
.input label {
  position: absolute; left: 17px; top: 50%; transform: translateY(-50%); transform-origin: left;
  font-size: 16px; color: var(--ink-3); pointer-events: none; transition: transform .25s var(--ease), color .2s;
}
.input input:focus + label, .input input:not(:placeholder-shown) + label { transform: translateY(-122%) scale(.76); color: var(--ink-2); }
.input.is-invalid input { border-color: var(--sun-ink); }
.input__err { display: block; font: 400 11px var(--mono); color: var(--sun-ink); margin-top: 6px; min-height: 0; }
.input__err:empty { display: none; }

.form__range legend { font-size: 14px; color: var(--ink-2); margin-bottom: 10px; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pills span { display: inline-flex; align-items: center; height: 40px; padding: 0 16px; border: 1px solid var(--line-strong); border-radius: 999px; font-size: 14px; transition: all .2s; }
.pills label:hover span { border-color: var(--ink); }
.pills input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.drop { display: flex; align-items: center; gap: 14px; padding: 18px 16px; border: 1px dashed var(--line-strong); border-radius: 10px; cursor: pointer; font-size: 15px; transition: border-color .2s, background .2s; position: relative; }
.drop:hover, .drop.is-drag { border-color: var(--sun); background: var(--sun-soft); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop svg { width: 22px; height: 22px; fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.drop small { color: var(--ink-3); margin-left: 6px; font-size: 13px; }
.drop:has(input:focus-visible) { outline: 2px solid var(--sun); outline-offset: 2px; }
.form__legal { font-size: 12px; color: var(--ink-3); line-height: 1.5; }
.form__done {
  position: absolute; inset: 0; border-radius: 20px; background: var(--paper);
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 12px; padding: 32px;
  animation: fadeIn .5s var(--ease);
}
.form__done[hidden] { display: none; }
.form__done svg { width: 64px; height: 64px; fill: none; stroke: var(--sun); stroke-width: 1.5; }
.form__done path { stroke-dasharray: 40; stroke-dashoffset: 40; animation: draw .7s .2s var(--ease) forwards; }
.form__done h3 { font: 300 44px/1 var(--serif); letter-spacing: -.02em; }
.form__done p { color: var(--ink-2); max-width: 30ch; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadeIn { from { opacity: 0; } }

/* ---------- Footer ---------- */
.footer { background: var(--night); color: var(--night-ink); padding-top: clamp(64px, 8vw, 120px); overflow: hidden; }
.footer .label { color: var(--night-ink-2); }
.footer__big {
  font: 300 clamp(96px, 24vw, 380px)/1.1 var(--serif); letter-spacing: -.05em;
  margin-left: -.02em; margin-bottom: -.12em; padding-right: .05em;
  background: linear-gradient(180deg, var(--night-ink) 30%, rgba(242,239,231,.08));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 32px; padding-block: 56px; border-bottom: 1px solid var(--night-line); margin-top: 48px; border-top: 1px solid var(--night-line); }
.footer__grid p, .footer__grid ul { margin-top: 14px; color: var(--night-ink-2); font-size: 15px; line-height: 1.7; }
.footer__grid a:hover { color: var(--sun); }
.footer__sun span { color: var(--night-ink); font-variant-numeric: tabular-nums; }
.footer__base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-block: 24px 32px; font: 400 11px var(--mono); color: var(--night-ink-2); letter-spacing: .02em; }
@media (max-width: 900px) { .footer__grid { grid-template-columns: 1fr 1fr; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

.hero__title.is-in .word { opacity: 1; transform: none; }
.hero__title .word { display: inline-block; opacity: 0; transform: translateY(.35em); transition: opacity .9s var(--ease), transform .9s var(--ease); }

@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, .hero__title .word { opacity: 1; transform: none; }
  .ticker__track { animation: none; }
}
@media (forced-colors: active) {
  .cf-bar.pos { fill: Highlight; } .cf-bar.neg { fill: GrayText; }
}