/* ============================================
   PROTOCOLO RESSONÂNCIA — design system
   Fundo escuro + amarelo médio (identidade)
   ============================================ */

:root {
  --bg: #0b0c10;
  --bg-soft: #101218;
  --card: #14161d;
  --card-hover: #191c25;
  --line: rgba(255, 255, 255, 0.07);
  --text: #edeef1;
  --text-dim: #9aa0ad;
  --text-faint: #676d7a;
  --gold: #e3b341;
  --gold-strong: #f0c65c;
  --gold-deep: #b8912e;
  --gold-soft: rgba(227, 179, 65, 0.12);
  --gold-line: rgba(227, 179, 65, 0.35);
  --radius: 18px;
  --maxw: 1080px;
  font-size: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, .serif {
  font-family: "Marcellus", "Cormorant Garamond", Georgia, serif;
  font-weight: 400;
  letter-spacing: 0.02em;
}

a { color: inherit; text-decoration: none; }

img, svg { max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

/* ---------- header ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(11, 12, 16, 0.85);
  border-bottom: 1px solid var(--line);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  max-width: var(--maxw);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Marcellus", Georgia, serif;
  font-size: 1rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  white-space: nowrap;
}

.brand .sigil { width: 28px; height: 28px; flex: none; color: var(--gold); }

.topbar nav { display: flex; gap: 1.4rem; font-size: 0.85rem; color: var(--text-dim); }

.topbar nav a:hover { color: var(--gold); }

/* ---------- hero (home) ---------- */
.hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 5.5rem 1.25rem 4.5rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -45% -20% auto;
  height: 140%;
  background:
    radial-gradient(ellipse 52% 42% at 50% 10%, rgba(227, 179, 65, 0.13), transparent 65%),
    radial-gradient(ellipse 30% 26% at 18% 32%, rgba(227, 179, 65, 0.05), transparent 60%),
    radial-gradient(ellipse 30% 26% at 82% 30%, rgba(227, 179, 65, 0.05), transparent 60%);
  pointer-events: none;
}

.hero > * { position: relative; }

.hero .eyebrow {
  font-size: 0.76rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.1rem;
}

.hero h1 { font-size: clamp(2.3rem, 6vw, 3.7rem); line-height: 1.1; margin-bottom: 1.2rem; }

.hero p.lead { max-width: 640px; margin: 0 auto; color: var(--text-dim); font-size: 1.05rem; }

.hero .actions {
  margin-top: 2.2rem;
  display: flex;
  gap: 0.9rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.72rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--card);
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn:hover { background: var(--card-hover); border-color: var(--gold-line); }

.btn.gold {
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  border: none;
  color: #17130a;
  font-weight: 600;
}

.btn.gold:hover { filter: brightness(1.07); }

/* ---------- sections ---------- */
.section { padding: 3.5rem 0; }

.section-head { text-align: center; margin-bottom: 2.4rem; }

.section-head h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 0.6rem; }

.section-head p { color: var(--text-dim); max-width: 560px; margin: 0 auto; }

/* ---------- frequency groups (home) ---------- */
.grupo { margin-bottom: 2.8rem; }

.grupo:last-child { margin-bottom: 0; }

.grupo-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.grupo-head h3 {
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.grupo-head h3::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--gold);
  flex: none;
}

.grupo-head p { color: var(--text-faint); font-size: 0.9rem; }

/* ---------- frequency grid (home) ---------- */
.freq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.1rem;
}

.freq-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem 1.4rem;
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
}

.freq-card:hover {
  transform: translateY(-4px);
  background: var(--card-hover);
  border-color: var(--gold-line);
  box-shadow: 0 12px 34px -18px rgba(227, 179, 65, 0.35);
}

.freq-card .icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.freq-card .icon svg { width: 23px; height: 23px; }

.freq-card .hz {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
}

.freq-card h3 { font-size: 1.34rem; }

.freq-card p { font-size: 0.89rem; color: var(--text-dim); flex: 1; }

.freq-card .go {
  margin-top: 0.5rem;
  font-size: 0.84rem;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.freq-card .go::after { content: "→"; transition: transform 0.2s; }

.freq-card:hover .go::after { transform: translateX(4px); }

/* ---------- frequency page hero ---------- */
.freq-hero {
  position: relative;
  text-align: center;
  padding: 3.6rem 1.25rem 2.2rem;
  overflow: hidden;
}

.freq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto;
  height: 130%;
  background: radial-gradient(ellipse 50% 45% at 50% 8%, rgba(227, 179, 65, 0.14), transparent 66%);
  pointer-events: none;
}

.freq-hero > * { position: relative; }

.freq-hero .icon {
  width: 60px;
  height: 60px;
  border-radius: 17px;
  display: grid;
  place-items: center;
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  color: var(--gold);
  margin: 0 auto 1.1rem;
}

.freq-hero .icon svg { width: 30px; height: 30px; }

.freq-hero .hz-big {
  font-family: "Marcellus", Georgia, serif;
  font-size: 0.9rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.7rem;
}

.freq-hero h1 { font-size: clamp(2rem, 5.5vw, 3rem); margin-bottom: 1rem; }

.freq-hero p.sub {
  max-width: 640px;
  margin: 0 auto;
  color: var(--text-dim);
  font-size: 0.97rem;
}

.crumb { font-size: 0.82rem; color: var(--text-faint); padding: 1.1rem 0 0; }

.crumb a:hover { color: var(--gold); }

/* ---------- custom player ---------- */
.player {
  background: linear-gradient(180deg, var(--card-hover), var(--card));
  border: 1px solid var(--gold-line);
  border-radius: 22px;
  padding: 1.7rem 1.7rem 1.4rem;
  max-width: 640px;
  margin: 1.8rem auto 0;
  box-shadow: 0 24px 60px -30px rgba(227, 179, 65, 0.25);
}

.player .mode-switch {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
  width: max-content;
  margin: 0 auto 1.5rem;
}

.player .mode-switch button {
  border: none;
  background: transparent;
  color: var(--text-dim);
  font: 500 0.84rem/1 "Inter", sans-serif;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.5rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.player .mode-switch button.active {
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  color: #17130a;
  font-weight: 600;
}

.player .mode-single {
  text-align: center;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.4rem;
}

/* animação central — visualizador de espectro circular (reage ao áudio real) */
.player .resonance {
  position: relative;
  width: 250px;
  height: 250px;
  margin: 0.2rem auto 1.4rem;
  display: grid;
  place-items: center;
}

.player .resonance::before {
  content: "";
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(227, 179, 65, 0.14), transparent 62%);
  opacity: 0;
  transition: opacity 0.7s ease;
}

.player.playing .resonance::before { opacity: 1; }

.player .viz {
  position: relative;
  width: 100%;
  height: 100%;
  display: block;
}


.player .main-controls {
  display: flex;
  align-items: center;
  gap: 1.3rem;
}

.player .play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  flex: none;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  color: #17130a;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, box-shadow 0.3s ease;
  box-shadow: 0 8px 26px -8px rgba(227, 179, 65, 0.55);
}

.player .play-btn:hover { filter: brightness(1.08); transform: scale(1.04); }

.player .play-btn:active { transform: scale(0.97); }

.player .play-btn svg { width: 26px; height: 26px; }

.player .track { flex: 1; min-width: 0; }

.player .track-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.55rem;
}

.player .track-name {
  font-family: "Marcellus", Georgia, serif;
  font-size: 1.02rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.player .eq {
  display: flex;
  align-items: flex-end;
  gap: 2.5px;
  height: 16px;
  flex: none;
  opacity: 0;
  transition: opacity 0.3s;
}

.player.playing .eq { opacity: 1; }

.player .eq span {
  width: 3px;
  border-radius: 2px;
  background: var(--gold);
  height: 30%;
}

.player.playing .eq span { animation: eq 1s ease-in-out infinite; }

.player.playing .eq span:nth-child(2) { animation-delay: 0.18s; }
.player.playing .eq span:nth-child(3) { animation-delay: 0.36s; }
.player.playing .eq span:nth-child(4) { animation-delay: 0.1s; }

@keyframes eq {
  0%, 100% { height: 25%; }
  50% { height: 100%; }
}

.player .seek {
  --p: 0%;
  appearance: none;
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--gold) var(--p), rgba(255, 255, 255, 0.1) var(--p));
  cursor: pointer;
  display: block;
}

.player .seek::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--gold-strong);
  border: none;
  box-shadow: 0 0 0 4px rgba(227, 179, 65, 0.2);
  transition: transform 0.15s;
}

.player .seek::-webkit-slider-thumb:hover { transform: scale(1.2); }

.player .seek::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--gold-strong);
  border: none;
  box-shadow: 0 0 0 4px rgba(227, 179, 65, 0.2);
}

.player .times {
  display: flex;
  justify-content: space-between;
  font-size: 0.74rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  margin-top: 0.45rem;
}

.player .session {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.player .s-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.player .s-btns { display: flex; gap: 0.45rem; flex-wrap: wrap; }

.player .s-btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-dim);
  font: 500 0.8rem/1 "Inter", sans-serif;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}

.player .s-btn:hover { border-color: var(--gold-line); color: var(--text); }

.player .s-btn.active {
  background: var(--gold-soft);
  border-color: var(--gold-line);
  color: var(--gold);
  font-weight: 600;
}

.player .s-status {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.player .foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}

.player .loop-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-dim);
  font: 500 0.8rem/1 "Inter", sans-serif;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s;
}

.player .loop-btn svg { width: 14px; height: 14px; }

.player .loop-btn:hover { border-color: var(--gold-line); color: var(--text); }

.player .loop-btn.on {
  background: var(--gold-soft);
  border-color: var(--gold-line);
  color: var(--gold);
}

.player .downloads { display: flex; gap: 0.7rem; flex-wrap: wrap; }

.player .dl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.72rem 1.35rem;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gold);
  background: var(--gold-soft);
  border: 1.5px solid var(--gold-line);
  transition: all 0.2s ease;
}

.player .dl-btn svg { width: 17px; height: 17px; flex: none; }

.player .dl-btn:hover {
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  border-color: transparent;
  color: #17130a;
}

/* ---------- guide content ---------- */
.callout {
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  padding: 1.05rem 1.3rem;
  margin: 1.6rem auto 0;
  max-width: 640px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.callout strong { color: var(--gold); }

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.1rem;
  max-width: 880px;
  margin: 2.6rem auto 0;
}

.gcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.6rem 1.6rem 1.4rem;
  transition: border-color 0.25s ease;
}

.gcard:hover { border-color: var(--gold-line); }

.gcard.wide { grid-column: 1 / -1; }

.gcard h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
}

.gcard h2 .sub-h {
  display: block;
  font-family: "Inter", sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin-top: 0.25rem;
}

.gcard p { color: var(--text-dim); margin-bottom: 0.9rem; font-size: 0.92rem; }

.gcard p:last-child { margin-bottom: 0; }

.gcard strong { color: var(--gold); font-weight: 600; }

.gcard ul { margin: 0 0 0 1.1rem; color: var(--text-dim); font-size: 0.92rem; }

.gcard li { margin-bottom: 0.55rem; }

.gcard li:last-child { margin-bottom: 0; }

.gcard li::marker { color: var(--gold); }

.gcard ul strong { color: var(--text); }

/* ---------- prev/next ---------- */
.freq-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: 880px;
  margin: 2.5rem auto 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
}

.freq-nav a { color: var(--text-dim); max-width: 46%; }

.freq-nav a:hover { color: var(--gold); }

.freq-nav .lbl {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.2rem;
}

.freq-nav .next { text-align: right; margin-left: auto; }

/* ---------- comece por aqui (home) ---------- */
.section.start { padding: 0 0 2.2rem; }

.start-card {
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  padding: 1.7rem 1.9rem 1.8rem;
}

.start-eyebrow {
  font-size: 0.76rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
}

.start-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  margin: 0;
  counter-reset: passo;
}

.start-steps li {
  counter-increment: passo;
  position: relative;
  padding-left: 2.6rem;
  color: var(--text-dim);
  font-size: 0.93rem;
}

.start-steps li::before {
  content: counter(passo);
  position: absolute;
  left: 0;
  top: 0.05rem;
  width: 1.8rem;
  height: 1.8rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  color: #17130a;
  font-weight: 700;
  font-size: 0.95rem;
}

.start-steps strong { color: var(--text); }

/* ---------- prévia: cards bloqueados ---------- */
.freq-card.locked .icon,
.freq-card.locked .hz,
.freq-card.locked h3,
.freq-card.locked p { opacity: 0.45; }

.freq-card.locked::before {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.22), transparent 80%);
}

.freq-card .lock {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--gold);
}

.freq-card .lock svg { width: 14px; height: 14px; flex: none; }

/* ---------- prévia: menu destaque ---------- */
.topbar nav a.destaque { color: var(--gold); font-weight: 600; }

/* ---------- prévia: seção de desbloqueio ---------- */
.cta-card {
  background: var(--card);
  border: 1px solid var(--gold-line);
  border-radius: 22px;
  padding: 2.3rem 2rem 2.1rem;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  box-shadow: 0 24px 60px -30px rgba(227, 179, 65, 0.22);
}

.cta-card h2 { font-size: clamp(1.6rem, 4vw, 2.15rem); margin-bottom: 0.7rem; }

.cta-card .cta-sub {
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto 1.9rem;
  font-size: 0.95rem;
}

.tiers { display: grid; gap: 0.8rem; text-align: left; margin-bottom: 1.9rem; }

.tier {
  position: relative;
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.05rem 1.25rem;
}

.tier .preco {
  font-family: "Marcellus", Georgia, serif;
  font-size: 1.3rem;
  color: var(--gold);
  white-space: nowrap;
  min-width: 78px;
}

.tier p { color: var(--text-dim); font-size: 0.92rem; }

.tier p strong { color: var(--text); }

.tier.destaque { background: var(--gold-soft); border-color: var(--gold-line); }

.tier .tag {
  position: absolute;
  top: -0.6rem;
  right: 1rem;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: #17130a;
  background: linear-gradient(135deg, var(--gold-strong), var(--gold-deep));
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
}

.pix-box {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  background: var(--gold-soft);
  border: 1.5px dashed var(--gold-line);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.3rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.pix-box:hover { border-color: var(--gold); }

.pix-box.copiado { border-style: solid; border-color: var(--gold); }

.pix-box .pix-rotulo {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.pix-box .chave {
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.pix-box .pix-nome { font-size: 0.85rem; color: var(--text-dim); }

.pix-box .pix-aviso { font-size: 0.78rem; color: var(--gold); margin-top: 0.35rem; }

.cta-passos { color: var(--text-dim); font-size: 0.93rem; max-width: 560px; margin: 0 auto; }

.cta-passos strong { color: var(--gold); }

/* ---------- prévia: faixa CTA nas páginas de frequência ---------- */
.previa-cta {
  display: block;
  max-width: 880px;
  margin: 2.2rem auto 0;
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  padding: 1.15rem 1.4rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.previa-cta:hover { border-color: var(--gold); }

.previa-cta strong { color: var(--gold); }

/* ---------- install card (PWA) ---------- */
.install-card {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
  background: var(--card);
  border: 1px solid var(--gold-line);
  border-radius: var(--radius);
  padding: 1.6rem 1.8rem;
  max-width: 760px;
  margin: 0 auto;
}

.install-card .sigil-big {
  width: 52px;
  height: 52px;
  flex: none;
  color: var(--gold);
}

.install-card .install-txt { flex: 1; min-width: 220px; }

.install-card h3 { font-size: 1.25rem; margin-bottom: 0.3rem; }

.install-card p { color: var(--text-dim); font-size: 0.9rem; }

.install-card .dica {
  width: 100%;
  font-size: 0.88rem;
  color: var(--text-dim);
  background: var(--gold-soft);
  border: 1px solid var(--gold-line);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  margin: 0;
}

.install-card .dica strong { color: var(--gold); }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding: 2.2rem 1.25rem 2.8rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.8rem;
}

footer .brand { justify-content: center; margin-bottom: 0.8rem; }

/* ---------- responsive ---------- */
@media (max-width: 640px) {
  .topbar-inner {
    flex-direction: column;
    gap: 0.35rem;
    padding-top: 0.75rem;
    padding-bottom: 0.7rem;
  }
  .topbar nav { gap: 1.2rem; font-size: 0.8rem; }
  .hero { padding: 3.6rem 1.25rem 3rem; }
  .player { padding: 1.4rem 1.2rem 1.2rem; }
  .player .resonance { transform: scale(0.82); margin: -0.9rem auto 0.5rem; }
  .player .main-controls { gap: 1rem; }
  .player .play-btn { width: 56px; height: 56px; }
  .player .session { justify-content: center; }
  .player .s-status { margin-left: 0; width: 100%; text-align: center; }
  .player .foot { flex-direction: column; align-items: stretch; }
  .player .loop-btn { justify-content: center; }
  .player .downloads { flex-direction: column; }
  .player .dl-btn { width: 100%; padding: 0.85rem 1.35rem; font-size: 0.98rem; }
  .freq-nav a { max-width: 48%; }
  .guide-grid { grid-template-columns: 1fr; }
  .start-steps { grid-template-columns: 1fr; gap: 1.1rem; }
  .install-card { justify-content: center; text-align: center; }
  .install-card .install-txt { min-width: 100%; }
  .cta-card { padding: 1.8rem 1.2rem 1.6rem; }
  .tier { flex-direction: column; gap: 0.3rem; }
}