/* =========================================================
   Projeto Antenas — Escola Politécnica da USP
   Paleta:  tinta   #0E1721  fundo escuro, o "silêncio" entre estações
            grafite #1C2937  superfícies elevadas no escuro
            papel   #F2F3F1  fundo claro
            sinal   #F2A413  o acento: a cor do pico de portadora
            ardosia #5A6B77  texto secundário
   ========================================================= */

:root {
  --tinta:    #0E1721;
  --grafite:  #1C2937;
  --papel:    #F2F3F1;
  --branco:   #FFFFFF;
  --sinal:    #F2A413;
  --sinal-esc:#8A5A05;
  --ardosia:  #5A6B77;
  --linha:    #D8DCD8;
  --linha-esc:#2B3A47;

  --display: "Bricolage Grotesque", "Trebuchet MS", system-ui, sans-serif;
  --corpo:   "Public Sans", system-ui, -apple-system, sans-serif;
  --dados:   "IBM Plex Mono", ui-monospace, monospace;

  --largura: 1140px;
  --raio: 14px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--corpo);
  font-size: 17px;
  line-height: 1.65;
  color: var(--tinta);
  background: var(--papel);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--display); font-weight: 800; line-height: 1.08; margin: 0; letter-spacing: -0.02em; }
p { margin: 0 0 1rem; }
a { color: inherit; }

:focus-visible { outline: 3px solid var(--sinal); outline-offset: 3px; border-radius: 4px; }

.pular {
  position: absolute; left: -9999px; top: 0;
  background: var(--sinal); color: var(--tinta);
  padding: 12px 18px; font-weight: 700; z-index: 999;
}
.pular:focus { left: 12px; top: 12px; }

/* ---------------- Régua de sintonia (navegação) ---------------- */

.dial {
  position: sticky; top: 0; z-index: 100;
  background: rgba(14, 23, 33, 0.82);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.dial__interno {
  max-width: var(--largura); margin: 0 auto;
  padding: 12px 24px;
  display: flex; align-items: center; gap: 28px;
}

.dial__marca {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--display); font-weight: 600; font-size: 16px;
  color: var(--papel); text-decoration: none; white-space: nowrap;
}
.dial__ponto {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--sinal);
  box-shadow: 0 0 0 4px rgba(242, 164, 19, 0.18);
}

.dial__nav { flex: 1; min-width: 0; }

.dial__regua {
  position: relative; height: 14px;
  background-image: repeating-linear-gradient(
    to right,
    var(--linha-esc) 0 1px,
    transparent 1px 11px
  );
  background-position: bottom;
  background-size: 100% 7px;
  background-repeat: repeat-x;
  margin-bottom: 6px;
}
.dial__agulha {
  position: absolute; bottom: 0; left: 0;
  width: 2px; height: 14px; background: var(--sinal);
  transition: transform 260ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.dial__estacoes {
  display: flex; gap: 26px; list-style: none; margin: 0; padding: 0;
}
.dial__estacoes a {
  font-family: var(--dados); font-size: 12px; letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #90A2AE; text-decoration: none;
  padding: 2px 0; display: block;
}
.dial__estacoes a:hover { color: var(--papel); }
.dial__estacoes a.ativo { color: var(--sinal); }

.dial__cta { white-space: nowrap; }

@media (max-width: 860px) {
  .dial__regua { display: none; }
  .dial__interno { flex-wrap: wrap; gap: 12px 20px; padding: 10px 18px; }
  .dial__nav { order: 3; flex-basis: 100%; }
  .dial__estacoes { gap: 18px; overflow-x: auto; padding-bottom: 2px; }
  .dial__cta { margin-left: auto; }
}

/* ---------------- Botões ---------------- */

.botao {
  display: inline-block; text-decoration: none;
  font-family: var(--corpo); font-weight: 700; font-size: 14px;
  padding: 10px 18px; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform 120ms ease, background-color 160ms ease;
}
.botao:active { transform: translateY(1px); }
.botao--grande { font-size: 16px; padding: 14px 28px; }

.botao--sinal { background: var(--sinal); color: #241701; }
.botao--sinal:hover { background: #FFB92E; }

.botao--fantasma { background: transparent; color: var(--papel); border-color: #43566A; }
.botao--fantasma:hover { border-color: var(--papel); }

/* ---------------- Hero ---------------- */

.hero {
  background:
    radial-gradient(ellipse at 85% 18%, rgba(242, 164, 19, .14), transparent 34%),
    radial-gradient(ellipse at 8% 75%, rgba(72, 124, 153, .13), transparent 40%),
    var(--tinta);
  color: var(--papel);
  padding: 96px 24px 28px;
}
.hero__conteudo { max-width: var(--largura); margin: 0 auto; }

.eyebrow {
  font-family: var(--dados); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--sinal); margin: 0 0 20px;
}
.eyebrow--claro { color: var(--sinal); }

.hero__titulo {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  max-width: 20ch;
  margin-bottom: 28px;
}
.hero__titulo em {
  font-style: normal;
  color: var(--sinal);
}

.hero__texto {
  max-width: 56ch; font-size: 18px; color: #B9C6D0;
  margin-bottom: 36px;
}

.hero__acoes { display: flex; flex-wrap: wrap; gap: 14px; padding-bottom: 72px; }

.ficha {
  max-width: var(--largura); margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0; margin-bottom: 0;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: var(--raio); overflow: hidden;
  background: rgba(255, 255, 255, .045);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
}
.ficha__item { padding: 22px 22px 26px; border-right: 1px solid rgba(255, 255, 255, .1); }
.ficha__item:last-child { border-right: none; }
.ficha dt {
  font-family: var(--dados); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: #7A8B98; margin-bottom: 6px;
}
.ficha dd {
  margin: 0; font-family: var(--display); font-weight: 600; font-size: 22px;
  color: var(--papel);
}
.ficha__un { font-family: var(--dados); font-size: 13px; font-weight: 400; color: #9AABB7; }

/* ---------------- Seções ---------------- */

.secao { padding: 88px 24px; }
.secao--claro { background: var(--papel); }
.secao--escuro { background: var(--tinta); color: var(--papel); }

.secao__cabecalho { max-width: var(--largura); margin: 0 auto 48px; }
.secao__cabecalho h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin-bottom: 20px; max-width: 18ch; }
.secao__texto { max-width: 62ch; font-size: 18px; }
.secao--claro .secao__texto { color: #3C4A55; }
.secao--escuro .secao__texto { color: #B9C6D0; }

.subtitulo {
  max-width: var(--largura); margin: 72px auto 24px;
  font-size: 1.4rem; font-weight: 600;
}

/* ---------------- Guia de escuta ---------------- */

.visualmente-oculto {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.guia {
  max-width: var(--largura); margin: 0 auto;
  border: 1px solid rgba(35, 58, 70, .12); border-radius: 22px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 20px 60px rgba(14, 23, 33, .07);
  overflow: hidden;
}
.guia__topo {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: 12px 24px; padding: 24px 28px;
  background: linear-gradient(110deg, rgba(242, 164, 19, .11), rgba(221, 235, 238, .34) 65%, rgba(255, 255, 255, .5));
  border-bottom: 1px solid var(--linha);
}
.guia__rotulo { margin: 0 0 2px; font: 500 11px var(--dados); letter-spacing: .12em; text-transform: uppercase; color: #6A5A3B; }
.guia__resumo { margin: 0; font-family: var(--display); font-size: clamp(18px, 2vw, 23px); font-weight: 600; line-height: 1.3; }
.guia__relogio { margin: 0; padding: 9px 13px; border: 1px solid rgba(14, 23, 33, .16); border-radius: 999px; background: rgba(255, 255, 255, .7); font: 500 13px var(--dados); white-space: nowrap; }
.guia__controles { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; padding: 16px 28px; border-bottom: 1px solid var(--linha); }
.guia__visoes { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid #DCE3E3; border-radius: 13px; background: #EDF1F0; }
.guia__visao { padding: 10px 15px; border: 0; border-radius: 9px; background: transparent; color: #4A5D68; font: 700 13px var(--corpo); cursor: pointer; transition: background-color 150ms ease, box-shadow 150ms ease, color 150ms ease; }
.guia__visao:hover { color: var(--tinta); }
.guia__visao--ativa { background: var(--branco); color: var(--tinta); box-shadow: 0 2px 9px rgba(14, 23, 33, .1); }
.guia__filtro { display: flex; align-items: center; gap: 10px; font: 600 12px var(--dados); color: #53636E; }
.guia__filtro[hidden] { display: none; }
.guia__filtro select { min-height: 40px; padding: 7px 30px 7px 10px; border: 1px solid #CFDAD9; border-radius: 9px; background: #fff; color: var(--tinta); font: 600 13px var(--corpo); }
.guia__tabela-rolagem { overflow-x: auto; }
.guia__tabela { width: 100%; min-width: 680px; border-collapse: collapse; text-align: left; }
.guia__tabela th { position: sticky; top: 0; padding: 14px 13px; background: #F7F8F6; color: #53636E; font: 500 10px var(--dados); text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
.guia__tabela td { padding: 15px 13px; border-top: 1px solid #E9ECE8; vertical-align: middle; font-size: 13px; line-height: 1.4; }
.guia__tabela th:first-child, .guia__tabela td:first-child { padding-left: 28px; }
.guia__tabela th:last-child, .guia__tabela td:last-child { padding-right: 28px; }
.guia__tabela tbody tr { transition: background-color 160ms ease, opacity 160ms ease; }
.guia__tabela tbody tr[hidden] { display: none; }
.guia__tabela tbody tr:hover { background: rgba(242, 164, 19, .055); }
.guia__linha--fora { background: rgba(14, 23, 33, .025); }
.guia__linha--fora .guia__frequencia { color: #52616C; }
.guia__linha--selecionada { background: rgba(242, 164, 19, .11); }
.guia__frequencia { display: inline-flex; gap: 5px; align-items: baseline; padding: 6px 10px; margin: -6px -10px; border: 0; border-radius: 8px; background: transparent; color: #74500B; font: 700 15px var(--dados); cursor: pointer; white-space: nowrap; }
.guia__frequencia:hover, .guia__frequencia[aria-pressed="true"] { color: var(--tinta); background: #F8DEAA; }
.guia__frequencia:disabled { color: #65747F; cursor: default; opacity: .72; }
.guia__frequencia:disabled:hover { color: #65747F; background: transparent; }
.guia__frequencia span { font-size: 11px; font-weight: 500; }
.guia__tabela td strong { display: block; font-size: 14px; line-height: 1.35; }
.guia__tabela td small { display: block; margin-top: 4px; color: #65747F; font-size: 11px; }
.guia__tabela td .guia__acesso { color: #705215; font-weight: 600; }
.guia__tabela td small a { color: #6B4C12; }
.guia__nota { margin: 0; padding: 14px 28px 18px; color: #5A6B77; font-size: 12px; }
.guia__fontes { padding: 20px 28px 24px; border-top: 1px solid var(--linha); }
.guia__fontes h3 { margin-bottom: 7px; font-size: 18px; }
.guia__fontes p { margin-bottom: 14px; color: #5A6B77; font-size: 12px; }
.guia__fontes-lista { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.guia__fontes-lista a { display: inline-block; padding: 6px 10px; border: 1px solid #CFDAD9; border-radius: 8px; color: #5D420D; background: #fff; font-size: 12px; text-decoration: none; }
.guia__fontes-lista a:hover { border-color: #B88320; background: #FFF7E5; text-decoration: underline; }
@media (max-width: 760px) {
  .guia__topo { padding: 20px; }
  .guia__controles { padding: 14px 20px; }
  .guia__visoes { width: 100%; }
  .guia__visao { flex: 1; }
  .guia__tabela { min-width: 0; }
  .guia__tabela thead { display: none; }
  .guia__tabela, .guia__tabela tbody, .guia__tabela tr, .guia__tabela td { display: block; width: 100%; }
  .guia__tabela tr { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; padding: 16px 20px; border-top: 1px solid #E9ECE8; }
  .guia__tabela td, .guia__tabela td:first-child, .guia__tabela td:last-child { border: 0; padding: 3px 0; }
  .guia__tabela td:nth-child(2) { grid-column: 1 / -1; grid-row: 1; margin-bottom: 4px; }
  .guia__tabela td:nth-child(1) { grid-column: 1; grid-row: 2; }
  .guia__tabela td:nth-child(3) { grid-column: 1 / -1; grid-row: 3; color: #52616C; }
  .guia__tabela td:nth-child(4) { grid-column: 1 / -1; grid-row: 4; }
  .guia__nota, .guia__fontes { padding-left: 20px; padding-right: 20px; }
}
@media (max-width: 420px) {
  .guia__visao { padding: 9px 8px; font-size: 12px; }
}

.rodape-nota {
  max-width: var(--largura); margin: 20px auto 0;
  font-size: 14px; color: var(--ardosia);
}

/* ---------------- Quadro do receptor ---------------- */

.quadro {
  max-width: var(--largura); margin: 0 auto 40px;
  background: var(--grafite); border: 1px solid var(--linha-esc);
  border-radius: var(--raio); overflow: hidden;
  min-height: 420px; display: flex; align-items: center; justify-content: center;
}
.quadro__aviso { text-align: center; padding: 48px 24px; }
.quadro__titulo { font-family: var(--display); font-weight: 600; font-size: 22px; margin-bottom: 8px; }
.quadro__texto { color: #9AABB7; max-width: 42ch; margin: 0 auto 22px; font-size: 15px; }
.quadro__ou { font-size: 14px; color: #7A8B98; margin: 14px 0 0; }
.quadro__ou a { color: var(--sinal); }
.quadro iframe { width: 100%; height: 640px; border: 0; display: block; }

.especificacoes {
  max-width: var(--largura); margin: 0 auto;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1px;
  background: var(--linha-esc); border: 1px solid var(--linha-esc); border-radius: var(--raio);
  overflow: hidden;
}
.especificacoes > div { background: var(--tinta); padding: 18px 22px; }
.especificacoes dt {
  font-family: var(--dados); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: #7A8B98; margin-bottom: 5px;
}
.especificacoes dd { margin: 0; font-size: 15px; color: var(--papel); }

/* ---------------- Projeto ---------------- */

.colunas {
  max-width: var(--largura); margin: 0 auto;
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 56px;
}
@media (max-width: 860px) { .colunas { grid-template-columns: 1fr; gap: 36px; } }

.colunas__texto p { font-size: 17px; color: #3C4A55; }
.colunas__texto p:first-child { font-size: 19px; color: var(--tinta); }

.objetivos { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.objetivos li {
  background: var(--branco); border: 1px solid var(--linha);
  border-left: 3px solid var(--sinal); border-radius: 0 12px 12px 0;
  padding: 18px 22px;
}
.objetivos h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.objetivos p { font-size: 15px; color: var(--ardosia); margin: 0; }

.integrantes {
  max-width: var(--largura); margin: 0 auto; padding: 0; list-style: none;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px;
}
.pessoa { background: var(--branco); border: 1px solid var(--linha); border-radius: var(--raio); padding: 20px 22px; }
.pessoa__nome { font-weight: 700; font-size: 16px; margin-bottom: 3px; }
.pessoa__papel { font-size: 14px; color: var(--ardosia); margin: 0; }
.pessoa--vaga { border-style: dashed; background: transparent; }
.pessoa--vaga .pessoa__nome { color: var(--ardosia); font-weight: 500; }

/* ---------------- Rodapé ---------------- */

.rodape { background: var(--tinta); color: #9AABB7; padding: 64px 24px 40px; }
.rodape__interno { max-width: var(--largura); margin: 0 auto; }
.rodape__marca { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
.rodape__selo { display: grid; place-items: center; flex: 0 0 58px; height: 58px; border: 1px solid rgba(242, 164, 19, .5); border-radius: 12px; background: rgba(242, 164, 19, .1); color: var(--sinal); font: 800 30px var(--display); line-height: 1; }
.rodape__selo span { color: #FFF; }
.rodape__inst { color: var(--papel); font-weight: 700; margin: 0 0 2px; font-size: 15px; }
.rodape__proj { margin: 0; font-size: 14px; }

.rodape__links { display: flex; flex-wrap: wrap; gap: 22px; padding: 22px 0; border-top: 1px solid var(--linha-esc); border-bottom: 1px solid var(--linha-esc); }
.rodape__links a { font-family: var(--dados); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none; }
.rodape__links a:hover { color: var(--sinal); }

.rodape__licenca { max-width: 68ch; font-size: 14px; margin: 24px 0 0; }
.rodape__licenca a { color: var(--sinal); }
.rodape__ano { font-family: var(--dados); font-size: 12px; margin: 28px 0 0; color: #5F7180; }

/* =========================================================
   Revisão de 27/08 — estações clicáveis, véu do receptor,
   crédito no hero e fotos dos integrantes
   ========================================================= */

/* ---- Crédito ao OpenWebRX no hero e no dial ---- */

.hero__credito {
  font-size: 13px; color: #7A8B98; margin: 24px 0 0; padding-bottom: 64px;
}
.hero__credito a { color: #B9C6D0; }
.hero__credito a:hover { color: var(--sinal); }
.hero__acoes { padding-bottom: 0; }

.dial__owrx {
  font-family: var(--dados); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; color: #90A2AE; text-decoration: none;
  white-space: nowrap; border: 1px solid var(--linha-esc);
  padding: 7px 12px; border-radius: 999px;
}
.dial__owrx:hover { color: var(--sinal); border-color: #43566A; }

/* ---- Quadro do receptor com véu ---- */

.quadro { position: relative; padding: 0; min-height: 0; display: block; }
.quadro iframe { width: 100%; height: 660px; border: 0; display: block; }

.veu {
  position: absolute; inset: 0;
  background: rgba(14, 23, 33, 0.82);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px; text-align: center;
}
.veu[hidden] { display: none; }
.veu__caixa { max-width: 42ch; }
.veu__titulo { font-family: var(--display); font-weight: 600; font-size: 24px; color: var(--papel); margin-bottom: 10px; }
.veu__texto { color: #B9C6D0; font-size: 15px; margin-bottom: 22px; }

.rodape-nota--claro { color: #7A8B98; margin-bottom: 40px; }
.rodape-nota--claro a { color: var(--sinal); }

/* ---- Integrantes com espaço para foto ---- */

.pessoa { text-align: center; }
.pessoa__foto {
  width: 96px; height: 96px; margin: 0 auto 14px;
  border-radius: 50%; border: 1px dashed var(--linha);
  background: #E9EBE9 center / cover no-repeat;
  display: flex; align-items: center; justify-content: center;
}
.pessoa__foto::after {
  content: attr(data-iniciais);
  font-family: var(--display); font-weight: 600; font-size: 26px; color: #9AA6A0;
}
.pessoa__foto[style*="background-image"] { border-style: solid; }
.pessoa__foto[style*="background-image"]::after { content: none; }
.pessoa__papel--vazio { color: #98A5A0; font-style: italic; }

/* O card reage à frequência; a régua permanece neutra para facilitar a leitura. */
.sintonia {
  --freq-hue: 41; --freq-progress: 87%;
  position: relative; isolation: isolate; overflow: hidden;
  max-width: var(--largura); margin: 0 auto 24px; padding: 28px;
  background: var(--grafite);
  border: 1px solid hsl(var(--freq-hue) 60% 72% / .5);
  border-radius: var(--raio);
  box-shadow: 0 18px 48px hsl(var(--freq-hue) 75% 35% / .12);
}
.sintonia::before {
  content: ''; position: absolute; inset: -30%; z-index: -1;
  background:
    radial-gradient(circle at 28% 25%, hsl(var(--freq-hue) 94% 60% / .42), transparent 38%),
    radial-gradient(circle at 76% 70%, hsl(calc(var(--freq-hue) + 70) 90% 60% / .3), transparent 42%),
    radial-gradient(circle at var(--freq-progress) 52%, hsl(calc(var(--freq-hue) - 60) 90% 65% / .2), transparent 36%);
  filter: blur(28px) saturate(1.25);
  animation: sintonia-fluir 8s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes sintonia-fluir {
  from { transform: translate(-4%, -2%) scale(1); }
  to { transform: translate(4%, 3%) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  .sintonia::before { animation: none; }
}
.sintonia__topo { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.sintonia h3 { font-size: 24px; }
.sintonia output { font-family: var(--dados); font-size: clamp(24px, 4vw, 38px); color: #fff; }
.sintonia label { display: block; font-size: 14px; }
.sintonia__escalas { display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 12px; }
.sintonia__escala {
  padding: 8px 13px; border: 1px solid #81909B; border-radius: 999px;
  background: rgba(14, 23, 33, .5); color: #DDE5E9;
  font: 600 13px var(--corpo); cursor: pointer;
}
.sintonia__escala:hover { border-color: #fff; }
.sintonia__escala--ativa { background: #E7EDF0; border-color: #E7EDF0; color: var(--tinta); }
.sintonia__escalas + label { color: #E1E8EB; }
#regua-frequencia {
  width: 100%; height: 38px; margin: 18px 0 4px; padding: 0;
  appearance: none; -webkit-appearance: none; background: transparent;
  cursor: ew-resize;
}
#regua-frequencia::-webkit-slider-runnable-track {
  height: 12px; border: 1px solid #A7B5BE; border-radius: 999px;
  background: linear-gradient(90deg, #6D808D, #B8C5CC);
}
#regua-frequencia::-moz-range-track {
  height: 12px; border: 1px solid #A7B5BE; border-radius: 999px;
  background: linear-gradient(90deg, #6D808D, #B8C5CC);
}
#regua-frequencia::-webkit-slider-thumb {
  appearance: none; -webkit-appearance: none;
  width: 28px; height: 28px; margin-top: -9px;
  border: 4px solid var(--grafite); border-radius: 50%;
  background: var(--sinal); box-shadow: 0 0 0 2px #fff;
}
#regua-frequencia::-moz-range-thumb {
  width: 20px; height: 20px;
  border: 4px solid var(--grafite); border-radius: 50%;
  background: var(--sinal); box-shadow: 0 0 0 2px #fff;
}
.sintonia__marcas { display: flex; justify-content: space-between; font: 12px var(--dados); color: #B9C6D0; }
.sintonia__ajuda { font-size: 12px; color: #D1DCE1; margin: 10px 0 0; }
.sintonia__faixa {
  display: flex; gap: 8px 20px; align-items: baseline; flex-wrap: wrap;
  margin-top: 20px; padding: 13px 16px; border-radius: 10px;
  background: rgba(14, 23, 33, .58); border: 1px solid rgba(255, 255, 255, .2);
}
.sintonia__faixa p { margin: 0; }
.sintonia__faixa-nome { font-weight: 700; color: #fff; }
.sintonia__faixa-suporte { font-size: 13px; color: #BEE9D4; }
.sintonia__faixa-suporte--ausente { color: #FFD3B8; }
.sintonia__form { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 26px; }
#frequencia-digitada { width: 145px; padding: 12px; font: 16px var(--dados); color: #fff; background: var(--tinta); border: 1px solid #90A2AE; border-radius: 8px; }
#sintonia-status { margin: 18px 0 8px; color: #fff; }
.sintonia__nota { font-size: 13px; color: #B9C6D0; margin: 0; }
.sintonia button:disabled { opacity: .5; cursor: not-allowed; }
@media(max-width: 520px) { .sintonia { padding: 18px; } .sintonia__form label { width: 100%; } }