/* ==========================================================================
   Preserve Water · "Linha d'água"
   ========================================================================== */

:root {
  --petroleo: #1B4B5A;
  --petroleo-fundo: #3D676F;
  --nevoa: #EAEAEA;
  --nevoa-clara: #F4F4F2;
  --bruma: #A7B8C4;
  --agua-clara: #CEE0E6;
  --prata: #A6A6A6;
  --grafite: #1E2326;
  --cabecalho: #DCE0E2; /* névoa levemente mais fria e escura, só para o header fixo */
  /* prata não passa AA em texto pequeno sobre névoa; legendas usam este tom */
  --texto-2: #566468;

  --serif: "Instrument Serif", "Times New Roman", serif;
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --header-h: 72px;
  --gutter: 20px;
  --maxw: 1200px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--nevoa); color: var(--grafite);
  font: 400 1rem/1.65 var(--sans); overflow-x: hidden;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
em { font-style: italic; }

:focus-visible { outline: 2px solid var(--petroleo); outline-offset: 3px; }
.section--dark :focus-visible { outline-color: var(--agua-clara); }

.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--petroleo); color: var(--nevoa); padding: 10px 16px; border-radius: 3px; }
.skip:focus { top: 12px; }

.container { width: min(var(--maxw), 100% - 2 * var(--gutter)); margin-inline: auto; }

/* ---------- Tipografia ---------- */
.display { font-family: var(--serif); font-weight: 400; line-height: 1.05; letter-spacing: -.01em; color: var(--petroleo); text-wrap: balance; }
.display em { font-style: italic; }
.h2 { font-size: clamp(2rem, 1.1rem + 3.6vw, 3.75rem); max-width: 22ch; }
.label {
  font: 500 .75rem/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--petroleo-fundo); margin-bottom: 20px; display: block;
}
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.lead { font-size: clamp(1.0625rem, .98rem + .4vw, 1.25rem); line-height: 1.6; color: var(--grafite); max-width: 56ch; }
.body-lg { font-size: clamp(1rem, .95rem + .25vw, 1.125rem); line-height: 1.7; max-width: 60ch; }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px; padding: 14px 22px;
  background: var(--petroleo); color: var(--nevoa-clara);
  font: 600 .9375rem/1.25 var(--sans); border-radius: 3px;
  transition: background-color .25s var(--ease);
}
.btn:hover { background: var(--petroleo-fundo); }
.btn__ico { width: 20px; height: 20px; flex: none; }
.btn--lg { padding: 18px 28px; font-size: 1rem; }
.btn--sm { padding: 10px 16px; font-size: .875rem; }
.btn--sm .btn__ico { width: 18px; height: 18px; }
.btn--light { background: var(--nevoa); color: var(--petroleo); }
.btn--light:hover { background: var(--agua-clara); }

.link-arrow { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: .9375rem; color: var(--petroleo); padding: 6px 0; border-bottom: 1px solid transparent; transition: border-color .25s, gap .25s var(--ease); }
.link-arrow svg { width: 18px; height: 18px; flex: none; }
.link-arrow:hover { border-bottom-color: currentColor; gap: 14px; }

/* ---------- Logo ---------- */
.logo { display: inline-flex; align-items: center; }
.logo__img { height: 40px; width: auto; max-width: 100%; }
.footer .logo__img { height: 44px; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--header-h);
  background: var(--cabecalho); border-bottom: 1px solid rgba(27, 75, 90, .1);
  transition: background-color .3s, border-color .3s, backdrop-filter .3s;
}
.header.is-scrolled { background: rgba(220, 224, 226, .9); border-bottom-color: rgba(27, 75, 90, .16); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.header__inner { height: 100%; display: flex; align-items: center; gap: 28px; }
.nav { display: none; margin-left: auto; gap: 28px; }
.nav a { font-weight: 500; font-size: .9375rem; color: var(--grafite); padding: 6px 0; border-bottom: 1px solid transparent; transition: border-color .25s; }
.nav a:hover { border-bottom-color: var(--petroleo); }
.header__cta { display: none; }

.burger { margin-left: auto; width: 44px; height: 44px; position: relative; border-radius: 3px; }
.burger span { position: absolute; left: 10px; right: 10px; height: 1.5px; background: var(--petroleo); transition: transform .3s var(--ease), top .3s var(--ease); }
.burger span:nth-child(1) { top: 17px; }
.burger span:nth-child(2) { top: 26px; }
.burger[aria-expanded="true"] span:nth-child(1) { top: 21.5px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { top: 21.5px; transform: rotate(-45deg); }

.menu {
  position: fixed; inset: 0; z-index: 40; background: var(--nevoa);
  padding: calc(var(--header-h) + 24px) var(--gutter) 32px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 32px; overflow-y: auto;
}
.menu[hidden] { display: none; }
.menu__nav { display: flex; flex-direction: column; }
.menu__nav a { font-family: var(--serif); font-size: 2.25rem; line-height: 1.1; color: var(--petroleo); padding: 16px 0; border-bottom: 1px solid rgba(27, 75, 90, .18); }
.menu .btn { justify-content: center; }
body.menu-open { overflow: hidden; }

@media (min-width: 960px) {
  .nav, .header__cta { display: inline-flex; }
  .header__cta { margin-left: 8px; }
  .burger { display: none; }
}

/* ---------- Linha d'água ---------- */
.waterline { width: 100%; height: 40px; line-height: 0; }
.waterline:empty { height: 1px; background: rgba(27, 75, 90, .6); }
.waterline svg { width: 100%; height: 40px; overflow: visible; }
.waterline path { fill: none; stroke: var(--petroleo); stroke-width: 1; vector-effect: non-scaling-stroke; }
.waterline--hero { position: absolute; left: 0; right: 0; top: -20px; z-index: 2; }
.waterline--hero:empty { top: 0; }

/* ---------- Reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in-view { opacity: 1; transform: none; }

/* ---------- Placeholder de imagem ---------- */
.ph { background: linear-gradient(160deg, var(--nevoa) 0%, var(--bruma) 100%); overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- Seções ---------- */
.section { padding-block: clamp(72px, 10vw, 140px); }
.section--alt { background: var(--nevoa-clara); }
.section--dark { position: relative; isolation: isolate; background: var(--petroleo); color: var(--nevoa); }
.section--dark::before { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .1; background: url("../assets/img/textura-agua.webp") center / cover no-repeat; }
.section--dark .display, .section--dark .label { color: var(--nevoa); }
.section--dark .label { color: var(--agua-clara); }

/* ---------- Hero ---------- */
.hero { padding-top: var(--header-h); }
.hero__top { padding-block: clamp(48px, 8vw, 112px) clamp(56px, 8vw, 96px); }
.hero__label { max-width: 46ch; margin-bottom: 28px; }
.hero__title { font-size: clamp(2.75rem, 1.2rem + 6vw, 5.5rem); max-width: 20ch; margin-bottom: 28px; }
.hero__sub { margin-bottom: 40px; }
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 32px; }
.hero__actions .btn { text-align: left; }

.hero__water {
  position: relative; height: clamp(320px, 96vw, 460px);
  background: linear-gradient(180deg, var(--bruma) 0%, var(--petroleo-fundo) 100%);
}
.hero__water picture, .hero__water img { display: block; width: 100%; height: 100%; }
.hero__water img { object-fit: cover; object-position: 70% 38%; }
@media (min-width: 701px) {
  .hero__water { height: clamp(320px, 46vw, 660px); }
  .hero__water img { object-position: 70% 36%; }
}
.hero__water::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(180deg, rgba(234,234,234,.5) 0, rgba(234,234,234,0) 8%),
    linear-gradient(180deg, rgba(234,234,234,0) 86%, var(--nevoa) 100%);
}

.stats { display: grid; grid-template-columns: 1fr; padding-block: 8px clamp(48px, 7vw, 88px); }
.stat { padding: 22px 0; border-top: 1px solid rgba(27, 75, 90, .22); }
.stat:first-child { border-top: 0; }
.stat__v { font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.125rem); font-weight: 500; color: var(--petroleo); letter-spacing: .02em; line-height: 1.2; }
.stat dd { margin-top: 6px; font-size: .9375rem; color: var(--texto-2); }
@media (min-width: 760px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
  .stat { border-top: 0; border-left: 1px solid rgba(27, 75, 90, .28); padding: 8px 32px; }
  .stat:first-child { border-left: 0; padding-left: 0; }
}

/* ---------- Quem somos ---------- */
.about { display: grid; gap: 40px; align-items: stretch; }
.impact {
  background: var(--bruma); color: var(--petroleo); padding: clamp(28px, 4vw, 56px);
  font-family: var(--serif); font-size: clamp(1.75rem, 1rem + 2.6vw, 3rem); line-height: 1.1; text-wrap: balance;
  display: flex; align-items: center;
}
.pillars { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; margin-top: clamp(48px, 6vw, 80px); }
.pillars li { border-top: 1px solid rgba(27, 75, 90, .35); padding: 16px 0 24px; font-weight: 600; font-size: 1rem; }
.pillars__n { display: block; font-size: .75rem; font-weight: 400; color: var(--texto-2); margin-bottom: 14px; letter-spacing: .08em; }
@media (min-width: 900px) {
  .about { grid-template-columns: 1fr 1fr; gap: 72px; }
  .pillars { grid-template-columns: repeat(4, 1fr); gap: 0 32px; }
}

/* ---------- O que fazemos ---------- */
#o-que-fazemos .h2 { max-width: 24ch; margin-bottom: clamp(40px, 6vw, 80px); }
.services { display: grid; grid-template-columns: 1fr; gap: 0 48px; }
.service { padding: 28px 0 32px; }
.service__n { display: block; font-size: .8125rem; color: var(--texto-2); margin-bottom: 14px; }
.service h3 { font: 600 1.1875rem/1.3 var(--sans); color: var(--petroleo); padding-bottom: 14px; border-bottom: 1px solid rgba(27, 75, 90, .35); margin-bottom: 14px; }
.service p { color: var(--grafite); max-width: 36ch; }
.closing { margin-top: clamp(40px, 6vw, 72px); padding-left: clamp(20px, 3vw, 36px); border-left: 1px solid var(--petroleo); font-family: var(--serif); font-size: clamp(1.625rem, 1rem + 2vw, 2.5rem); line-height: 1.15; color: var(--petroleo); max-width: 30ch; }
.closing strong { display: block; font: 500 .75rem/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--petroleo-fundo); margin-bottom: 12px; }
@media (min-width: 900px) { .services { grid-template-columns: repeat(3, 1fr); } }

/* ---------- Como funciona ---------- */
#como-funciona .h2 { margin-bottom: clamp(48px, 6vw, 80px); }
.timeline { position: relative; display: grid; gap: 40px; padding-left: 32px; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 6px; bottom: 6px; width: 1px; background: rgba(27, 75, 90, .22); }
.timeline::after { content: ""; position: absolute; left: 4px; top: 6px; bottom: 6px; width: 1px; background: var(--petroleo); transform: scaleY(0); transform-origin: top; transition: transform 1.6s var(--ease) .2s; }
.timeline.in-view::after { transform: scaleY(1); }
.timeline li { position: relative; }
.timeline li::before { content: ""; position: absolute; left: -32px; top: 5px; width: 9px; height: 9px; border-radius: 50%; background: var(--petroleo); }
.timeline .label { margin-bottom: 10px; color: var(--petroleo); }
.timeline p { max-width: 32ch; }
@media (min-width: 900px) {
  .timeline { grid-template-columns: repeat(4, 1fr); gap: 32px; padding: 40px 0 0; }
  .timeline::before, .timeline::after { left: 0; right: 0; top: 4px; bottom: auto; width: auto; height: 1px; }
  .timeline::after { transform: scaleX(0); transform-origin: left; }
  .timeline.in-view::after { transform: scaleX(1); }
  .timeline li::before { left: 0; top: -40px; }
}
.next { margin-top: clamp(56px, 8vw, 96px); background: var(--bruma); padding: clamp(28px, 5vw, 64px); display: grid; gap: 28px; align-items: center; }
.next__text { font-family: var(--serif); font-size: clamp(1.75rem, 1rem + 2.4vw, 2.875rem); line-height: 1.08; color: var(--petroleo); max-width: 22ch; text-wrap: balance; }
.next .btn { justify-self: start; }
@media (min-width: 900px) { .next { grid-template-columns: 1.3fr 1fr; gap: 56px; } .next .btn { justify-self: end; } }

.meter { margin-top: 24px; max-width: 280px; }
.meter__img { display: block; aspect-ratio: 1; border-radius: 12px; }
.meter figcaption { margin-top: 10px; font: 500 .6875rem/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--texto-2); }

/* ---------- Quem atendemos ---------- */
.serve-head { display: grid; gap: 28px; margin-bottom: clamp(40px, 6vw, 72px); }
.serve-head .body-lg { align-self: end; }
@media (min-width: 900px) { .serve-head { grid-template-columns: 1.1fr 1fr; gap: 72px; } }

.segments { border-bottom: 1px solid rgba(27, 75, 90, .3); }
.segment {
  position: relative; display: grid; grid-template-columns: 72px 1fr; align-items: center; gap: 6px 16px;
  padding: 20px 0; border-top: 1px solid rgba(27, 75, 90, .3);
}
.segment__thumb { width: 72px; height: 54px; grid-row: 1 / 3; border-radius: 2px; }
.segment__name { font: 400 clamp(1.875rem, 1.2rem + 2.6vw, 3.5rem)/1.05 var(--serif); color: var(--petroleo); }
.segment .link-arrow { justify-self: start; }
@media (min-width: 900px) {
  .segment { grid-template-columns: 1fr auto; padding: 32px 0; gap: 0 32px; }
  .segment__name { grid-column: 1; grid-row: 1; transition: transform .4s var(--ease); }
  .segment .link-arrow { grid-column: 2; grid-row: 1; }
  .segment__thumb {
    position: absolute; left: 46%; top: 50%; width: 220px; height: 138px; margin-top: -69px; z-index: 1;
    opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity .35s var(--ease), transform .35s var(--ease);
  }
  .segment:hover .segment__thumb, .segment:focus-within .segment__thumb { opacity: 1; transform: none; }
  .segment:hover .segment__name { transform: translateX(8px); }
}

/* ---------- Resultados ---------- */
#resultados .h2 { max-width: 20ch; margin-bottom: 16px; }
.note { font-size: .875rem; color: var(--agua-clara); margin-bottom: clamp(32px, 5vw, 56px); max-width: 60ch; }
.highlight { margin-bottom: clamp(40px, 6vw, 72px); padding-block: clamp(24px, 4vw, 40px); border-block: 1px solid rgba(206, 224, 230, .28); }
.highlight__v { font-size: clamp(2.5rem, 1rem + 6.4vw, 5.5rem); font-weight: 500; line-height: 1.05; letter-spacing: -.02em; color: var(--nevoa); }
.highlight__cap { margin-top: 12px; font-size: .9375rem; color: var(--agua-clara); max-width: 48ch; }
.results { display: grid; gap: 16px; }
.results__head { display: none; }
.r-row { border: 1px solid rgba(206, 224, 230, .28); padding: 20px; display: grid; gap: 0; }
.r-op { font: 400 1.75rem/1.1 var(--serif); margin-bottom: 14px; }
.r-cell { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 10px 0; border-top: 1px solid rgba(206, 224, 230, .18); font-size: .9375rem; }
.r-cell::before { content: attr(data-label); font: 500 .6875rem/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--agua-clara); }
.r-pct { order: -1; border-top: 0; padding-top: 0; padding-bottom: 14px; align-items: flex-end; }
.r-pct .mono { font-size: 2.5rem; font-weight: 500; line-height: 1; color: var(--nevoa); }
.r-bar { height: 3px; background: var(--petroleo-fundo); margin-top: 16px; }
.r-bar i { display: block; height: 100%; width: 0; background: var(--bruma); transition: width 1.2s var(--ease) .15s; }
.results.in-view .r-bar i { width: var(--w); }
.results__cta { margin-top: clamp(40px, 6vw, 72px); }

@media (min-width: 900px) {
  .results { gap: 0; }
  .results__head, .r-row { display: grid; grid-template-columns: 1.3fr 1.2fr 1.2fr 1fr 1.2fr; align-items: baseline; gap: 0 24px; }
  .results__head { font: 500 .6875rem/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--agua-clara); padding: 0 0 16px; border-bottom: 1px solid rgba(206, 224, 230, .45); }
  .results__head div:not(:first-child), .r-cell { text-align: right; }
  .r-row { border: 0; border-bottom: 1px solid rgba(206, 224, 230, .18); padding: 28px 0 24px; }
  .r-op { margin: 0; font-size: 1.875rem; }
  .r-cell { display: block; border: 0; padding: 0; font-size: 1.0625rem; }
  .r-cell::before { content: none; }
  .r-pct { order: 0; padding: 0; }
  .r-pct .mono { font-size: clamp(1.75rem, 1rem + 1.6vw, 2.5rem); }
  .r-bar { grid-column: 1 / -1; margin-top: 20px; }
}

/* ---------- Diferenciais ---------- */
.diff { display: grid; gap: 40px; grid-template-areas: "title" "dash" "list"; }
.diff__title { grid-area: title; }
.diff__dash { grid-area: dash; }
.diff__list { grid-area: list; display: grid; gap: 0 40px; grid-template-columns: 1fr; }
.diff__list li { padding: 22px 0; border-top: 1px solid rgba(27, 75, 90, .3); }
.diff__list .label { margin-bottom: 10px; color: var(--petroleo); }
.diff__list p { max-width: 38ch; }
@media (min-width: 700px) { .diff__list { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) {
  .diff { grid-template-columns: 1.35fr 1fr; grid-template-areas: "title dash" "list dash"; column-gap: 72px; row-gap: 48px; align-items: start; }
  .diff__dash { position: sticky; top: calc(var(--header-h) + 24px); margin-top: 8px; }
}

.dash { background: #fff; border: 1px solid rgba(27, 75, 90, .22); border-radius: 12px; padding: 24px; }
.dash__top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; }
.dash__top .label { margin: 0; }
.tag { font: 500 .6875rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; background: var(--agua-clara); color: var(--petroleo); padding: 6px 8px; border-radius: 3px; }
.dash__chart { width: 100%; height: auto; }
.dash__line { stroke: var(--petroleo); stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.dash__area { fill: var(--agua-clara); opacity: .55; }
.dash__row { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(27, 75, 90, .15); }
.dash__row .label { margin-bottom: 6px; }
.dash__value { font-size: 1.75rem; font-weight: 500; line-height: 1; color: var(--petroleo); }
.dash__ok { display: flex; align-items: center; gap: 8px; font-size: .75rem; color: var(--texto-2); border: 1px solid rgba(27, 75, 90, .2); border-radius: 999px; padding: 7px 12px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--petroleo-fundo); flex: none; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 40px; }
.faq .h2 { max-width: 12ch; }
.faq__list { border-bottom: 1px solid rgba(27, 75, 90, .3); }
details { border-top: 1px solid rgba(27, 75, 90, .3); }
summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 22px 0; font: 600 1.0625rem/1.4 var(--sans); color: var(--petroleo); }
summary::-webkit-details-marker { display: none; }
summary::after { content: ""; flex: none; width: 10px; height: 10px; border-right: 1.5px solid var(--petroleo); border-bottom: 1.5px solid var(--petroleo); transform: rotate(45deg) translate(-2px, -2px); transition: transform .3s var(--ease); }
details[open] summary::after { transform: rotate(-135deg) translate(-2px, -2px); }
details p { padding: 0 40px 24px 0; max-width: 56ch; }
@media (min-width: 900px) { .faq { grid-template-columns: 1fr 1.4fr; gap: 72px; } }

/* ---------- CTA final ---------- */
.cta__grid { display: grid; gap: 40px; align-items: center; }
.cta__img { aspect-ratio: 4 / 5; border-radius: 2px; max-height: 560px; width: 100%; }
.cta__text .body-lg { margin-top: 24px; }
.cta__actions { margin-top: 36px; display: flex; flex-wrap: wrap; align-items: center; gap: 20px 32px; }
.contact { margin-top: 48px; display: grid; gap: 16px; padding-top: 28px; border-top: 1px solid rgba(27, 75, 90, .3); }
.contact .label { margin-bottom: 4px; color: var(--texto-2); }
.contact a { border-bottom: 1px solid rgba(27, 75, 90, .4); }
@media (min-width: 900px) {
  .cta__grid { grid-template-columns: .8fr 1.2fr; gap: 80px; }
  .contact { grid-template-columns: repeat(3, auto); justify-content: start; gap: 40px; }
}

/* ---------- Rodapé ---------- */
.footer { background: var(--nevoa-clara); border-top: 1px solid rgba(27, 75, 90, .18); padding: 56px 0 96px; }
.footer__inner { display: grid; gap: 32px; }
.footer__brand p { margin-top: 16px; color: var(--texto-2); font-size: .9375rem; max-width: 34ch; }
.footer__nav, .footer__social { display: flex; flex-wrap: wrap; gap: 10px 24px; font-size: .9375rem; font-weight: 500; align-content: start; }
.footer__nav { flex-direction: column; gap: 10px; }
.footer__social a { display: inline-flex; align-items: center; gap: 8px; }
.footer__social svg { width: 18px; height: 18px; }
.footer a:hover { color: var(--petroleo); text-decoration: underline; text-underline-offset: 4px; }
.footer__legal { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(27, 75, 90, .15); display: flex; flex-wrap: wrap; gap: 8px 24px; font-size: .8125rem; color: var(--texto-2); }
@media (min-width: 900px) {
  .footer { padding-bottom: 56px; }
  .footer__inner { grid-template-columns: 1.4fr 1fr 1fr; }
}

/* ---------- Botão flutuante ---------- */
.fab {
  position: fixed; right: 16px; bottom: 16px; z-index: 45; height: 56px; min-width: 56px; padding: 0 16px;
  display: inline-flex; align-items: center; justify-content: center; gap: 0;
  background: var(--petroleo); color: #fff; border-radius: 999px;
  box-shadow: 0 2px 10px rgba(30, 35, 38, .18);
  opacity: 0; transform: translateY(12px); pointer-events: none; visibility: hidden;
  transition: opacity .35s var(--ease), transform .35s var(--ease), background-color .25s, visibility 0s .35s;
}
.fab.is-visible { opacity: 1; transform: none; pointer-events: auto; visibility: visible; transition-delay: 0s; }
.fab:hover, .fab:focus-visible { background: var(--petroleo-fundo); }
.fab svg { width: 26px; height: 26px; flex: none; }
.fab__txt { max-width: 0; overflow: hidden; white-space: nowrap; font: 600 .9375rem/1 var(--sans); transition: max-width .35s var(--ease), margin .35s var(--ease); }
@media (hover: hover) and (min-width: 900px) {
  .fab { right: 28px; bottom: 28px; }
  .fab:hover .fab__txt, .fab:focus-visible .fab__txt { max-width: 160px; margin-left: 10px; }
}

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; transition-delay: 0s !important; animation: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}