/* ==========================================================================
   DAS — Gestão Comercial & Marketing
   Estética: blueprint / planta técnica sobre navy profundo.
   Mobile-first. Sem frameworks.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --ink: #020D17;          /* fundo base */
  --surface: #0A1A2F;      /* superfícies */
  --surface-2: #10233D;    /* cards elevados / hover */
  --text: #F2F6FA;         /* branco-gelo */
  --muted: #93A7BC;        /* texto secundário */
  --primary: #2F80FF;      /* azul elétrico — ação */
  --primary-hover: #4D93FF;
  --accent: #7FD1FF;       /* ciano — dados e blueprint */
  --line: rgba(127, 209, 255, 0.16);   /* traços finos */
  --line-strong: rgba(127, 209, 255, 0.35);

  --font-display: "Space Grotesk", "Archivo", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --radius: 10px;
  --container: 1160px;
  --header-h: 72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset enxuto ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
ul, ol { padding: 0; }
a { color: inherit; }

/* Foco visível no teclado */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Tipografia ---------- */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.1rem, 5.5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 22ch; }
h3 { font-size: 1.25rem; }

.accent-text { color: var(--accent); }

.eyebrow {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-lead {
  color: var(--muted);
  font-size: 1.06rem;
  max-width: 58ch;
  margin-top: 1rem;
}

/* ---------- Layout ---------- */
.container {
  width: min(var(--container), 100% - 2.5rem);
  margin-inline: auto;
}
.section { padding: clamp(4rem, 9vw, 7.5rem) 0; }
.section-alt { background: var(--surface); }

/* Grid pontilhado blueprint */
.blueprint-bg {
  position: relative;
  background-image:
    radial-gradient(rgba(127, 209, 255, 0.10) 1px, transparent 1px);
  background-size: 28px 28px;
}
.blueprint-bg::after {
  /* esmaece o grid nas bordas para não competir com o texto */
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 40%, transparent 30%, var(--ink) 95%);
  pointer-events: none;
}
.blueprint-bg > .container { position: relative; z-index: 1; }
.section-alt.blueprint-bg::after {
  background: radial-gradient(ellipse at 50% 40%, transparent 30%, var(--surface) 95%);
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); background: rgba(127, 209, 255, 0.06); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.88rem; }
.btn-lg { padding: 1.1rem 2.2rem; font-size: 1.08rem; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s, border-color 0.25s;
}
.site-header.scrolled {
  background: rgba(2, 13, 23, 0.88);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}
.logo-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--text);
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  padding: 0.05rem 0.45rem;
}
.logo-text {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.main-nav a:not(.btn) {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.main-nav a:not(.btn):hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--header-h) + clamp(3rem, 8vw, 6rem)) 0 clamp(3.5rem, 7vw, 5.5rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
.hero-sub {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 52ch;
  margin-top: 1.4rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.2rem;
}
.hero-note {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 1.1rem;
  font-size: 0.86rem;
  color: var(--muted);
  max-width: 48ch;
}
.hero-note svg { flex-shrink: 0; color: var(--accent); margin-top: 0.1em; }

/* ---------- Ilustração do hero (elemento assinatura) ---------- */
.hero-diagram img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}
.hero-diagram svg {
  width: 100%;
  height: auto;
  color: var(--line-strong);
}
.bp-caption {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.14em;
  fill: var(--muted);
  opacity: 0.7;
}

/* degraus */
.steps .face { fill: rgba(127, 209, 255, 0.05); stroke: rgba(127, 209, 255, 0.4); stroke-width: 1; }
.steps .top  { fill: rgba(127, 209, 255, 0.15); stroke: rgba(127, 209, 255, 0.4); stroke-width: 1; }
.steps .side { fill: rgba(47, 128, 255, 0.14);  stroke: rgba(127, 209, 255, 0.4); stroke-width: 1; }
.ground { stroke: var(--line); stroke-dasharray: 3 5; }

/* bandeira */
.flag-pole { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; }
.flag-cloth { fill: var(--primary); }
.flag-base { fill: var(--accent); }

/* seta de crescimento */
.arrow {
  fill: none;
  stroke: url(#gArrow);
  stroke-width: 4.5;
  stroke-linecap: round;
}
.arrow-glow {
  fill: none;
  stroke: #2F80FF;
  stroke-width: 11;
  stroke-linecap: round;
  opacity: 0.25;
}
.diagram-on .draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: bp-draw 1.3s var(--ease) 0.35s forwards;
}
@keyframes bp-draw { to { stroke-dashoffset: 0; } }

/* chips, painel e esteira */
.chip-box, .panel-box, .wchip-box {
  fill: rgba(10, 26, 47, 0.6);
  stroke: var(--line-strong);
  stroke-width: 1;
}
.icon-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-fill { fill: var(--accent); stroke: none; }
.panel-label, .wchip-label {
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  fill: var(--muted);
}
.strip-face { fill: rgba(127, 209, 255, 0.04); stroke: rgba(127, 209, 255, 0.35); stroke-width: 1; }
.strip-div line { stroke: var(--line); stroke-dasharray: 3 4; }
.strip-label {
  font-family: var(--font-display);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  fill: var(--muted);
  text-anchor: middle;
}
.strip-connector { stroke: var(--accent); stroke-dasharray: 2 4; stroke-width: 1.2; }
.robot-ring {
  fill: rgba(2, 13, 23, 0.65);
  stroke: var(--accent);
  stroke-width: 1.2;
  stroke-dasharray: 4 4;
}
.robot-halo {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  opacity: 0;
}
.wa-ring { fill: none; stroke: var(--accent); stroke-width: 1.2; }

/* entrada sequencial dos grupos */
.fx { opacity: 0; }
.diagram-on .fx { animation: bp-fade 0.8s var(--ease) forwards; }
@keyframes bp-fade { from { opacity: 0; } to { opacity: 1; } }

/* pulso do agente de IA no centro da esteira */
.diagram-on .robot-halo {
  animation: bp-pulse 3.2s ease-out 1.2s infinite;
  transform-box: fill-box;
  transform-origin: center;
}
@keyframes bp-pulse {
  0%   { transform: scale(1); opacity: 0.9; }
  60%  { transform: scale(1.9); opacity: 0; }
  100% { transform: scale(1.9); opacity: 0; }
}

/* ---------- Barra de credibilidade ---------- */
.cred-bar {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  padding: 1.1rem 0;
}
.cred-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
}
.cred-list li {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--muted);
  white-space: nowrap;
}
.cred-list li:not(:last-child)::after {
  content: "·";
  color: var(--accent);
  margin-left: 1rem;
}

/* ---------- Cards de serviço ---------- */
.cards-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 3rem;
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}
.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}
.card-illus {
  margin-bottom: 1.5rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: rgba(2, 13, 23, 0.45);
}
.card-illus svg { width: 100%; height: auto; }
.illus-tint { fill: rgba(127, 209, 255, 0.10); }
.illus-glass { fill: rgba(2, 13, 23, 0.7); }
.illus-fold { stroke: var(--line); }
.illus-route { stroke-dasharray: 5 4; stroke-width: 1.8; }
.illus-ground { stroke: var(--line); stroke-dasharray: 3 5; }
.card-cta {
  margin-top: auto;
  padding-top: 1.5rem;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--accent);
  text-decoration: none;
}
.card-cta span { transition: transform 0.2s var(--ease); }
.card-cta:hover span { transform: translateX(4px); }
.step-num {
  color: var(--accent);
  font-size: 0.85em;
  margin-right: 0.4rem;
}
.card p { color: var(--muted); margin-top: 0.8rem; font-size: 0.96rem; }
.deliverables {
  list-style: none;
  margin-top: 1.2rem;
  border-top: 1px dashed var(--line-strong);
  padding-top: 1.2rem;
}
.deliverables li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.deliverables li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

/* ---------- IA na prática ---------- */
.ia-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin-top: 3rem;
}
.ia-card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
  transition: border-color 0.25s, background-color 0.25s;
}
.ia-card:hover { border-color: var(--line-strong); background: var(--surface-2); }
.ia-card h3 { font-size: 1.08rem; }
.ia-card p { color: var(--muted); font-size: 0.93rem; margin-top: 0.6rem; }
.ia-card .ia-result {
  color: var(--accent);
  font-size: 0.87rem;
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line);
}
.ia-card.featured {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(47, 128, 255, 0.12), transparent 55%), var(--ink);
}
.ia-card.featured h3 { font-size: 1.3rem; }

.pill-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2.5rem;
}
.pill-tags li {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 0.3rem 0.85rem;
}

/* ---------- Resultados ---------- */
.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 3rem;
}
.result-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  background: var(--surface);
}
.result-col h3 {
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--line-strong);
}
.stat { margin-top: 1.4rem; }
.stat-value {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.3;
  color: var(--text);
}
.microcopy {
  margin-top: 2.2rem;
  text-align: center;
  font-family: var(--font-display);
  color: var(--muted);
  font-size: 1rem;
  letter-spacing: 0.02em;
}

/* ---------- Sobre ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 3rem;
  align-items: start;
}
.about-photo {
  max-width: 340px;
}
.about-photo img {
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
}
.about-bio p + p { margin-top: 1.1rem; }
.about-bio p { color: var(--muted); font-size: 1.02rem; }
.about-bio p:first-child { color: var(--text); }

.badges {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.8rem;
}
.badges li {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 0.4rem 0.9rem;
}

.logos-strip { margin-top: 4rem; }
.logos-title {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}
.logos-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2rem 3rem;
}
.logos-list img {
  height: 34px;
  width: auto;
  filter: grayscale(1) brightness(1.6) opacity(0.55);
  transition: filter 0.25s;
}
.logos-list li:hover img { filter: none; }

/* ---------- Timeline (Como funciona) ---------- */
.timeline {
  list-style: none;
  counter-reset: step;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
  position: relative;
}
.timeline li {
  position: relative;
  padding-left: 2.2rem;
  border-left: 1px dashed var(--line-strong);
}
.timeline-num {
  position: absolute;
  left: -1.05rem;
  top: 0;
  width: 2.1rem;
  height: 2.1rem;
  display: grid;
  place-items: center;
  background: var(--ink);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
}
.timeline h3 { font-size: 1.1rem; }
.timeline p { color: var(--muted); font-size: 0.94rem; margin-top: 0.5rem; max-width: 46ch; }

/* ---------- CTA final ---------- */
.cta-final { text-align: center; }
.cta-final h2 { margin-inline: auto; }
.cta-final .section-lead { margin-inline: auto; }
.cta-actions { margin-top: 2.5rem; }
.cta-links {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.9rem;
  color: var(--muted);
}
.cta-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}
.cta-links a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 0;
  background: var(--surface);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}
.footer-nav a {
  color: var(--muted);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--text); }
.footer-copy { font-size: 0.82rem; }

/* ---------- Botão flutuante "Fale comigo" ---------- */
.wa-float {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.4rem 1.4rem 0.4rem 0.45rem;
  background: #4FC7FF;
  color: #03202F;
  border-radius: 999px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5);
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.wa-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
}
.wa-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  border: 2px solid #4FC7FF;
  animation: wa-pulse 2.8s ease-out infinite;
  pointer-events: none;
}
@keyframes wa-pulse {
  0%   { transform: scale(1); opacity: 0.6; }
  70%  { transform: scale(1.18); opacity: 0; }
  100% { transform: scale(1.18); opacity: 0; }
}
.wa-avatar {
  position: relative;
  width: 46px;
  height: 46px;
  flex-shrink: 0;
}
.wa-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  background: var(--surface-2);
}
.wa-status {
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 14px;
  height: 14px;
  background: #22C55E;
  border: 3px solid #4FC7FF;
  border-radius: 50%;
}
.wa-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  white-space: nowrap;
}
@media (max-width: 480px) {
  .wa-float { gap: 0.55rem; padding: 0.35rem 1.1rem 0.35rem 0.4rem; }
  .wa-avatar { width: 38px; height: 38px; }
  .wa-status { width: 12px; height: 12px; }
  .wa-label { font-size: 0.92rem; }
}

/* ---------- Reveal no scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .wa-float::before,
  .diagram-on .robot-halo,
  .diagram-on .fx,
  .diagram-on .draw { animation: none !important; }
  .diagram-on .draw { stroke-dashoffset: 0; }
  .fx, .diagram-on .fx { opacity: 1; }
  .btn, .card { transition: none; }
}

/* ---------- Breakpoints ---------- */
@media (min-width: 640px) {
  .ia-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; gap: 3.5rem; }
  .cards-3 { grid-template-columns: repeat(3, 1fr); }
  .ia-grid { grid-template-columns: repeat(3, 1fr); }
  .ia-card.featured { grid-column: span 2; }
  .results-grid { grid-template-columns: repeat(3, 1fr); }
  .about-grid { grid-template-columns: 340px 1fr; gap: 3.5rem; }
  .timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }
  .timeline li {
    border-left: none;
    border-top: 1px dashed var(--line-strong);
    padding-left: 0;
    padding-top: 2rem;
    padding-right: 1.8rem;
  }
  .timeline-num {
    left: 0;
    top: -1.05rem;
  }
  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- Menu mobile ---------- */
@media (max-width: 899px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(2, 13, 23, 0.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem 1.25rem;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), visibility 0.25s;
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .main-nav a:not(.btn) {
    padding: 0.9rem 0.25rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
  }
  .nav-cta { margin-top: 1rem; }
  .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); }
}