/* ==========================================================
   Potentia — tokens
   ========================================================== */
:root {
  --bg: #0A0A0A;
  --surface: #141414;
  --surface-2: #0F0F0F;
  --line: #1F1F1F;
  --border: #262626;
  --border-strong: #333333;
  --text: #F5F5F5;
  --muted: #A3A3A3;
  --dim: #8A8A8A;
  --green: #68B42C;
  --green-hover: #7CC93C;
  --green-dark: #4E8C1F;

  --display: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --body: 'Manrope', 'Helvetica Neue', Arial, sans-serif;

  --wrap: 1280px;
  --gutter: clamp(20px, 5vw, 80px);
  --section: clamp(72px, 9vw, 128px);
  --radius: 4px;
  --radius-lg: 6px;
}

/* ==========================================================
   Base
   ========================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p { margin: 0; }
h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
h3 {
  font-family: var(--body);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
}
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  padding: 10px 14px; background: var(--green); color: var(--bg); border-radius: var(--radius); font-weight: 600;
}
.skip:focus { top: 16px; }

/* ==========================================================
   Shared pieces
   ========================================================== */
.eyebrow {
  display: flex; align-items: center; gap: 12px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--green);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--green); flex: none; }

.lead { font-size: 18px; color: var(--muted); max-width: 52ch; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 56px; padding: 0 28px;
  border-radius: var(--radius);
  font-family: var(--body); font-weight: 600; font-size: 16px; line-height: 1;
  cursor: pointer; transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
.btn svg { transition: transform .22s cubic-bezier(.2,.7,.2,1); }
.btn--primary { background: var(--green); color: var(--bg); border: 0; }
.btn--primary:hover { background: var(--green-hover); }
.btn--primary:hover svg { transform: translateX(4px); }
.btn--primary:active { transform: translateY(1px); }
.btn--ghost {
  position: relative; isolation: isolate; overflow: hidden;
  background: transparent; color: var(--text); border: 1px solid var(--border-strong);
}
.btn--ghost::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: var(--green); transform: scaleX(0); transform-origin: left center;
  transition: transform .28s cubic-bezier(.2,.7,.2,1);
}
.btn--ghost:hover { border-color: var(--green); color: var(--bg); }
.btn--ghost:hover::before { transform: scaleX(1); }
.btn--block { width: 100%; }

.link {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px;
  color: var(--green); font-weight: 600; font-size: 16px;
}
.link::after { content: ""; width: 16px; height: 2px; background: currentColor; transition: width .18s ease; }
.link:hover::after { width: 28px; }

.brand { display: inline-flex; align-items: center; gap: 14px; color: var(--text); }
.brand__mark { width: auto; height: 44px; transition: height .25s ease; }
.nav.is-compact .brand__mark { height: 36px; }
.wordmark {
  font-family: var(--display); font-weight: 700; font-size: 20px; letter-spacing: 0.32em;
  color: var(--text); white-space: nowrap; line-height: 1; padding-top: 2px;
}
.wordmark span { color: var(--green); }

.section { padding-block: var(--section); }
.section--line { border-top: 1px solid var(--line); }
.section__head {
  display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 32px 64px; align-items: end;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.section__aside { color: var(--muted); max-width: 42ch; }

/* ==========================================================
   Nav
   ========================================================== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 10, 10, .82);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; min-height: 76px; }
.nav__menu { display: flex; align-items: center; gap: 36px; font-size: 15px; font-weight: 500; color: var(--muted); }
.nav__link { position: relative; padding-block: 6px; transition: color .18s ease; }
.nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--green); transform: scaleX(0); transform-origin: center;
  transition: transform .22s cubic-bezier(.2,.7,.2,1);
}
.nav__link:hover, .nav__link.is-active { color: var(--text); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__inner { transition: min-height .25s ease; }
.nav.is-compact .nav__inner { min-height: 60px; }
.nav__menu .btn { min-height: 44px; padding: 0 20px; color: var(--text); }
.nav__toggle {
  display: none; width: 44px; height: 44px; padding: 10px;
  background: transparent; border: 1px solid var(--border-strong); border-radius: var(--radius); cursor: pointer;
  flex-direction: column; justify-content: center; gap: 5px;
}
.nav__toggle span { display: block; height: 2px; background: var(--text); transition: transform .2s ease, opacity .2s ease; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================
   Hero
   ========================================================== */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero__inner {
  position: relative;
  min-height: calc(100svh - 76px - 72px);
  display: flex; flex-direction: column; justify-content: center;
  padding-block: clamp(64px, 10vh, 120px);
}
.hero__title {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(38px, 5.2vw, 76px);
  line-height: 1.02; letter-spacing: -0.025em;
  margin-bottom: 28px;
}
.hero__title em { font-style: normal; color: var(--green); }
.hero__line { display: block; }
@media (max-width: 900px) { .hero__line { display: inline; } }
.hero__lead { font-size: clamp(18px, 1.6vw, 22px); color: var(--muted); margin-bottom: 40px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero__title, .hero__lead, .hero__actions { max-width: min(820px, 62%); }

.hero__mark {
  position: absolute; right: var(--gutter); top: 50%; transform: translateY(-50%);
  width: min(38vw, 520px); height: auto; pointer-events: none;
  stroke-linejoin: round;
}
.hero__mark-a, .hero__mark-b { stroke: var(--green); stroke-width: 3; }
.hero__mark-b { opacity: .45; }
.hero__mark-base { stroke: var(--border); stroke-width: 1; }

.hero__strip { border-top: 1px solid var(--line); }
.hero__strip-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  min-height: 72px; padding-block: 16px;
  font-size: 13px; color: var(--dim);
}
.hero__strip-label { font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; }
.hero__segments { display: flex; flex-wrap: wrap; gap: 8px 28px; letter-spacing: 0.06em; }

/* hero load sequence */
@media (prefers-reduced-motion: no-preference) {
  .hero__line, .hero__lead, .hero__actions {
    opacity: 0; transform: translateY(18px);
    animation: rise .7s cubic-bezier(.2,.7,.2,1) forwards;
  }
  .hero__line:nth-child(1) { animation-delay: .15s; }
  .hero__line:nth-child(2) { animation-delay: .27s; }
  .hero__lead { animation-delay: .42s; }
  .hero__actions { animation-delay: .54s; }
  .hero__mark-a, .hero__mark-b {
    stroke-dasharray: 1100; stroke-dashoffset: 1100;
    animation: draw 1.4s cubic-bezier(.4,0,.2,1) .3s forwards;
  }
  .hero__mark-b { animation-delay: .55s; }
}
@keyframes rise { to { opacity: 1; transform: none; } }
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ==========================================================
   Gargalos — checklist clicável
   ========================================================== */
.checklist {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 64px;
  border-bottom: 1px solid var(--line);
}
.checklist li { border-top: 1px solid var(--line); }
.check-item {
  width: 100%; display: flex; align-items: center; gap: 20px; text-align: left;
  padding: 22px 0; background: none; border: 0; color: var(--text);
  font: inherit; font-size: 19px; cursor: pointer;
  transition: color .18s ease;
}
.check-item:hover { color: var(--green); }
.check {
  flex: none; width: 24px; height: 24px;
  display: grid; place-items: center;
  border: 1px solid var(--border-strong); border-radius: 3px;
  transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}
.check-item:hover .check { border-color: var(--green); }
.check svg { width: 14px; height: 14px; fill: none; stroke: var(--bg); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.check svg path { stroke-dasharray: 24; stroke-dashoffset: 24; transition: stroke-dashoffset .3s ease .05s; }
.check-item[aria-pressed="true"] .check { background: var(--green); border-color: var(--green); }
.check-item[aria-pressed="true"] .check svg path { stroke-dashoffset: 0; }
.check-item[aria-pressed="true"]:active .check { transform: scale(.9); }

.checklist__result {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px;
  margin-top: 32px; padding: 24px 28px;
  border: 1px solid var(--green); border-radius: var(--radius-lg);
  background: rgba(104, 180, 44, .06);
}
.checklist__count { font-size: 18px; font-weight: 600; }
.checklist__count strong { color: var(--green); font-weight: 700; }
@media (prefers-reduced-motion: no-preference) {
  .checklist li { opacity: 0; transform: translateY(10px); transition: opacity .5s ease, transform .5s cubic-bezier(.2,.7,.2,1); }
  .checklist.is-visible li { opacity: 1; transform: none; }
  .checklist.is-visible li:nth-child(2) { transition-delay: .06s; }
  .checklist.is-visible li:nth-child(3) { transition-delay: .12s; }
  .checklist.is-visible li:nth-child(4) { transition-delay: .18s; }
  .checklist.is-visible li:nth-child(5) { transition-delay: .24s; }
  .checklist.is-visible li:nth-child(6) { transition-delay: .30s; }
  .checklist__result { animation: rise .45s cubic-bezier(.2,.7,.2,1); }
}

/* ==========================================================
   Split layouts (custo, CTA)
   ========================================================== */
.split {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(40px, 6vw, 96px); align-items: center;
}
.split__text { display: flex; flex-direction: column; align-items: flex-start; gap: 24px; }
.split__text .eyebrow { margin-bottom: 0; }
.split--cta { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: start; }

.panel { padding: clamp(24px, 3vw, 40px); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.panel__label { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dim); padding-bottom: 20px; }
.questions { counter-reset: q; }
.questions li {
  counter-increment: q;
  display: flex; gap: 16px; padding: 16px 0; border-top: 1px solid var(--border);
  line-height: 1.4;
}
.questions li::before {
  content: counter(q, decimal-leading-zero);
  flex: none; width: 24px; padding-top: 3px;
  font-family: var(--display); font-weight: 700; font-size: 13px; color: var(--green);
}
.panel__foot { padding-top: 24px; border-top: 1px solid var(--border); font-size: 15px; color: var(--muted); }

/* ==========================================================
   Calculadora do custo
   ========================================================== */
.calc { display: flex; flex-direction: column; gap: 22px; }
.calc .panel__label { padding-bottom: 0; }
.calc__field { display: flex; flex-direction: column; gap: 10px; }
.calc__row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; font-size: 15px; color: var(--muted); }
.calc__row output { font-family: var(--display); font-weight: 700; font-size: 18px; color: var(--text); white-space: nowrap; }
.calc input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 24px; margin: 0;
  background: transparent; cursor: pointer;
}
.calc input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(to right, var(--green) var(--fill, 0%), var(--border-strong) var(--fill, 0%)); }
.calc input[type="range"]::-moz-range-track { height: 4px; border-radius: 2px; background: var(--border-strong); }
.calc input[type="range"]::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--green); }
.calc input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; margin-top: -9px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--green);
  transition: transform .15s ease, background-color .15s ease;
}
.calc input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border-radius: 50%; background: var(--bg); border: 2px solid var(--green); }
.calc input[type="range"]:hover::-webkit-slider-thumb, .calc input[type="range"]:active::-webkit-slider-thumb { transform: scale(1.15); background: var(--green); }
.calc input[type="range"]:focus-visible { outline: none; }
.calc input[type="range"]:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px rgba(104,180,44,.35); }
.calc__result { display: flex; flex-direction: column; gap: 6px; padding: 24px 0 4px; border-top: 1px solid var(--border); }
.calc__result-label { font-size: 14px; color: var(--muted); }
.calc__value {
  font-family: var(--display); font-weight: 700; font-size: clamp(40px, 4.4vw, 56px); line-height: 1; letter-spacing: -0.02em;
  color: var(--green); font-variant-numeric: tabular-nums;
  transition: transform .15s ease;
}
.calc__value.is-bumping { transform: scale(1.03); }
.calc .panel__foot { padding-top: 20px; }
.calc__cta { color: var(--green); font-weight: 600; }
.calc__cta:hover { text-decoration: underline; }

/* ==========================================================
   Como funciona — steps
   ========================================================== */
.steps__track { position: relative; height: 2px; margin: 0 32px 28px; background: var(--border); }
.steps__line { position: absolute; inset: 0; background: var(--green); transform: scaleX(0); transform-origin: left center; }
@media (prefers-reduced-motion: no-preference) {
  .steps__track.is-visible .steps__line { transition: transform 1.2s cubic-bezier(.4,0,.2,1) .1s; }
}
.steps__track.is-visible .steps__line { transform: scaleX(1); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.step {
  display: flex; flex-direction: column; gap: 20px;
  padding: 32px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.step__num { font-family: var(--display); font-weight: 700; font-size: 44px; line-height: 1; color: var(--green); }
.step h3 { font-size: 22px; }
.step p { color: var(--muted); font-size: 16px; }

/* ==========================================================
   Onde a IA atua — cards expansíveis
   ========================================================== */
.areas { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; align-items: start; }
.area {
  display: flex; flex-direction: column; gap: 14px;
  padding: 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: border-color .2s ease;
}
.area.is-open { border-color: var(--green); }
.area__toggle {
  display: flex; align-items: center; gap: 12px; width: 100%; padding: 0;
  background: none; border: 0; color: var(--text); font: inherit; text-align: left; cursor: pointer;
}
.area__toggle > svg:first-child { flex: none; width: 24px; height: 24px; fill: none; stroke: var(--green); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.area__title { flex: 1; font-weight: 600; font-size: 19px; line-height: 1.25; }
.area__chev { flex: none; width: 18px; height: 18px; fill: none; stroke: var(--dim); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s ease, stroke .2s ease; }
.area__toggle:hover .area__chev { stroke: var(--green); }
.area__toggle[aria-expanded="true"] .area__chev { transform: rotate(180deg); stroke: var(--green); }
.area__summary { color: var(--muted); font-size: 15px; }
.area__more { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s cubic-bezier(.2,.7,.2,1); }
.area__more > div { overflow: hidden; }
.area.is-open .area__more { grid-template-rows: 1fr; }
.area__example {
  margin-top: 4px; padding: 14px 16px; border-left: 2px solid var(--green);
  background: var(--surface-2); border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 15px; line-height: 1.5;
}
.area__example span { display: block; font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--green); margin-bottom: 6px; }

/* ==========================================================
   Segmentos — grade com gargalo típico
   ========================================================== */
.grid-list {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border); border-left: 1px solid var(--border);
}
.grid-list li { display: grid; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.seg {
  display: grid; grid-template-rows: auto 0fr; align-content: start; gap: 0;
  width: 100%; height: 100%; min-height: 84px; padding: 26px 24px;
  background: none; border: 0; color: var(--text); font: inherit; text-align: left; cursor: pointer;
  transition: grid-template-rows .3s cubic-bezier(.2,.7,.2,1), background-color .2s ease;
}
.seg__name { font-size: 18px; font-weight: 500; transition: color .18s ease; }
.seg__hint { overflow: hidden; font-size: 14px; line-height: 1.45; color: var(--muted); opacity: 0; transition: opacity .25s ease; }
.seg:hover, .seg:focus-visible, .seg.is-open { grid-template-rows: auto 1fr; background: var(--surface); }
.seg:hover .seg__name, .seg:focus-visible .seg__name, .seg.is-open .seg__name { color: var(--green); }
.seg:hover .seg__hint, .seg:focus-visible .seg__hint, .seg.is-open .seg__hint { opacity: 1; padding-top: 8px; }

/* ==========================================================
   Manifesto
   ========================================================== */
.manifesto { border-top: 1px solid var(--line); padding-block: clamp(96px, 14vw, 180px); text-align: center; }
.manifesto__rule { display: block; width: 40px; height: 2px; background: var(--green); margin: 0 auto 32px; }
.manifesto__text {
  font-family: var(--display); font-weight: 500;
  font-size: clamp(26px, 4vw, 56px); line-height: 1.15; letter-spacing: -0.01em;
  max-width: 22ch; margin-inline: auto; text-wrap: balance;
}
.manifesto__line { display: block; }
.manifesto__line--green { color: var(--green); }
@media (prefers-reduced-motion: no-preference) {
  .manifesto__line { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
  .manifesto__text.is-visible .manifesto__line { opacity: 1; transform: none; }
  .manifesto__text.is-visible .manifesto__line--green { transition-delay: .35s; }
}

/* ==========================================================
   Cenários — alternância Antes / Com a Potentia
   ========================================================== */
.switch {
  position: relative; display: inline-grid; grid-template-columns: 1fr 1fr; isolation: isolate;
  margin-bottom: 32px; padding: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.switch__btn {
  position: relative; z-index: 1; min-height: 44px; padding: 0 22px;
  background: none; border: 0; border-radius: var(--radius); color: var(--muted);
  font: inherit; font-weight: 600; font-size: 15px; cursor: pointer; white-space: nowrap;
  transition: color .2s ease;
}
.switch__btn.is-active { color: var(--bg); }
.switch__thumb {
  position: absolute; top: 4px; bottom: 4px; left: 4px; width: calc(50% - 4px);
  background: var(--green); border-radius: var(--radius);
  transition: transform .28s cubic-bezier(.2,.7,.2,1);
}
.switch[data-view="after"] .switch__thumb { transform: translateX(100%); }

.cases { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.case {
  display: grid; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: border-color .3s ease;
}
.case__before, .case__after {
  grid-area: 1 / 1; padding: 28px; display: flex; flex-direction: column; gap: 12px;
  transition: opacity .3s ease, transform .3s ease;
}
.case__before p:last-child { font-size: 20px; font-weight: 600; line-height: 1.3; }
.case__after p:last-child { font-size: 18px; line-height: 1.4; }
.case__label { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dim); }
.case__after .case__label { color: var(--green); }
.case__after { opacity: 0; transform: translateY(8px); pointer-events: none; }
.cases[data-view="after"] .case__before { opacity: 0; transform: translateY(-8px); pointer-events: none; }
.cases[data-view="after"] .case__after { opacity: 1; transform: none; pointer-events: auto; }
.cases[data-view="after"] .case { border-color: var(--green); }

/* ==========================================================
   CTA — form
   ========================================================== */
.bullets { display: flex; flex-direction: column; gap: 14px; color: var(--muted); }
.bullets li { display: flex; align-items: center; gap: 14px; }
.bullets li::before { content: ""; flex: none; width: 6px; height: 6px; background: var(--green); border-radius: 1px; }

.cta-card {
  display: flex; flex-direction: column; gap: 16px;
  padding: clamp(28px, 3.5vw, 44px); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.cta-card__icon { width: 40px; height: 40px; fill: none; stroke: var(--green); stroke-width: 1.8; stroke-linejoin: round; }
.cta-card__title { font-family: var(--display); font-weight: 700; font-size: 28px; line-height: 1.1; letter-spacing: -0.01em; }
.cta-card__text { color: var(--muted); }
.cta-card .btn { margin-top: 8px; }
.cta-card__note { font-size: 14px; color: var(--dim); text-align: center; }
.cta-card__note a { color: var(--green); }
.cta-card__note a:hover { text-decoration: underline; }
.cta-card__warn { font-size: 13px; color: #E0A800; text-align: center; }

/* ==========================================================
   WhatsApp flutuante (mobile)
   ========================================================== */
.wa-float {
  position: fixed; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); z-index: 60;
  display: none; width: 56px; height: 56px; place-items: center;
  background: var(--green); color: var(--bg); border-radius: 50%;
  box-shadow: 0 8px 24px rgba(0,0,0,.45);
  opacity: 0; transform: translateY(16px) scale(.9);
  transition: opacity .25s ease, transform .25s cubic-bezier(.2,.7,.2,1);
}
.wa-float svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linejoin: round; }
.wa-float.is-visible { opacity: 1; transform: none; }

/* ==========================================================
   Footer
   ========================================================== */
.footer { border-top: 1px solid var(--line); padding-block: 56px 40px; }
.footer__grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 40px 48px; }
.footer__brand { display: flex; flex-direction: column; gap: 14px; }
.footer__brand p { font-size: 15px; color: var(--muted); max-width: 30ch; }
.footer__col { display: flex; flex-direction: column; gap: 12px; font-size: 15px; }
.footer__col a { color: var(--muted); }
.footer__col a:hover { color: var(--text); }
.footer__title { font-size: 12px; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dim); padding-bottom: 4px; }
.footer__address {
  margin-top: 6px; padding-top: 14px; border-top: 1px solid var(--line);
  font-style: normal; line-height: 1.55; color: var(--muted);
}
.footer__address-label { display: block; font-size: 11px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--dim); margin-bottom: 6px; }
.footer__address > span { display: block; }
.footer__address small { display: block; margin-top: 2px; font-size: 13px; color: var(--dim); }
.footer__col [data-wa-number] { white-space: nowrap; }
@media (max-width: 480px) {
  .footer__address-line > span { display: block; }
  .footer__address-line > .footer__sep { display: none; }
}
.footer__bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line);
  font-size: 13px; color: var(--dim);
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 1080px) {
  .areas { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero__mark { width: 30vw; opacity: .6; }
}
@media (max-width: 900px) {
  .section__head { grid-template-columns: 1fr; align-items: start; }
  .split, .split--cta { grid-template-columns: 1fr; }
  .steps, .cases { grid-template-columns: 1fr; }
  .steps__track { display: none; }
  .wa-float { display: grid; }
  .switch { display: grid; width: 100%; }
  .grid-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero__title, .hero__lead, .hero__actions { max-width: none; }
  .hero__mark { right: -12vw; top: auto; bottom: -6vw; transform: none; width: 56vw; opacity: .22; }
  .hero__strip-inner { flex-direction: column; align-items: flex-start; }

  .nav__toggle { display: flex; }
  .nav__menu {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px var(--gutter) 20px;
  }
  .nav__menu.is-open { display: flex; }
  .nav__menu a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 17px; color: var(--text); }
  .nav__menu .btn { margin-top: 16px; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .areas { grid-template-columns: 1fr; }
  .checklist { grid-template-columns: 1fr; }
  .check-item { font-size: 17px; padding: 18px 0; }
  .checklist__result .btn { width: 100%; }
  .hero__actions .btn { width: 100%; }
  .hero__inner { min-height: 0; padding-block: 64px 56px; }
  .brand__mark { height: 36px; }
  .brand { gap: 10px; }
  .wordmark { font-size: 17px; }
  .seg { padding: 18px 16px; min-height: 64px; }
  .seg__name { font-size: 16px; }
  .seg__hint { font-size: 13px; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}