/* ============================================================
   Digital Plataformas Play — hoja de estilos
   ============================================================ */

:root {
  --bg: #070b16;
  --bg-2: #0b1120;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: #0e1526;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);
  --text: #edf2ff;
  --muted: #9aa9c7;
  --brand: #22d3ee;
  --brand-2: #8b5cf6;
  --brand-3: #f472b6;
  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --font: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }

.container {
  width: min(1160px, 100% - 40px);
  margin-inline: auto;
}

/* Fondo decorativo */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(600px 420px at 12% -5%, rgba(34, 211, 238, 0.16), transparent 70%),
    radial-gradient(700px 500px at 88% 8%, rgba(139, 92, 246, 0.16), transparent 70%),
    radial-gradient(600px 500px at 50% 105%, rgba(244, 114, 182, 0.08), transparent 70%);
}

/* ===================== Botones ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }
.btn-lg { padding: 17px 32px; font-size: 1rem; }

.btn-primary {
  background: linear-gradient(120deg, var(--brand), #6366f1 55%, var(--brand-2));
  color: #06101f;
  box-shadow: 0 12px 30px rgba(34, 211, 238, 0.22);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(99, 102, 241, 0.35);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.07); border-color: var(--brand); }

.btn-light {
  background: #fff;
  color: #0b1120;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}
.btn-light:hover { transform: translateY(-2px); }

/* ===================== Header ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 11, 22, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 74px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { border-radius: 12px; }

.brand-text {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-text > span {
  background: linear-gradient(100deg, var(--brand), var(--brand-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand-text em { font-style: normal; color: var(--muted); font-weight: 500; }

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav a {
  font-size: 0.92rem;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav a:hover { color: var(--text); }

.header-actions { display: flex; align-items: center; gap: 10px; }

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: 12px;
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero { padding: 82px 0 70px; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-grid > * { min-width: 0; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  background: rgba(34, 211, 238, 0.08);
  color: #9beaf7;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}

.hero h1 {
  margin: 20px 0 18px;
  font-size: clamp(2.15rem, 4.6vw, 3.6rem);
  line-height: 1.07;
  letter-spacing: -0.035em;
  font-weight: 800;
  overflow-wrap: break-word;
}

.grad {
  background: linear-gradient(100deg, var(--brand) 5%, #818cf8 50%, var(--brand-3) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 34rem;
  margin: 0 0 28px;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.hero-trust li { display: flex; align-items: center; gap: 7px; }
.tick {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background: rgba(34, 211, 238, 0.14);
  color: var(--brand);
  font-size: 0.7rem;
  font-weight: 700;
}

/* Visual del hero */
.hero-visual { position: relative; display: flex; justify-content: center; min-width: 0; width: 100%; }

.device {
  width: 100%;
  max-width: 420px;
  border-radius: 26px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(20, 29, 52, 0.95), rgba(9, 14, 27, 0.95));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-7deg) rotateX(3deg);
}

.device-top {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.device-title {
  margin-left: auto;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.device-body { padding: 14px; display: grid; gap: 10px; }

.mini-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}
.mini-art {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 0.85rem;
  color: #fff;
  background: linear-gradient(140deg, var(--a), var(--b));
  flex-shrink: 0;
}
.mini-art.has-logo {
  width: 54px;
  height: 54px;
  padding: 7px;
  background: #fff;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}
.mini-art.has-logo img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.mini-info { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.mini-info strong,
.mini-info small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini-info strong { font-size: 0.88rem; }
.mini-info small { font-size: 0.74rem; color: var(--muted); }
.mini-card em { margin-left: auto; font-style: normal; font-weight: 700; font-size: 0.85rem; color: #c7d6ff; }

.device-foot {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.02);
}
.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

.float-card {
  position: absolute;
  padding: 10px 15px;
  border-radius: 13px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  background: rgba(14, 21, 38, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
  animation: floaty 5s ease-in-out infinite;
}
.float-1 { top: 8%; left: -6%; }
.float-2 { bottom: 10%; right: -4%; animation-delay: -2.4s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ===================== Secciones ===================== */
.section { padding: 78px 0; }

.section-head {
  max-width: 620px;
  margin: 0 auto 38px;
  text-align: center;
}
.section-head h2 {
  margin: 16px 0 10px;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.section-head p { margin: 0; color: var(--muted); }

/* Filtros */
.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin-bottom: 32px;
}
.filter {
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter:hover { color: var(--text); border-color: var(--line-strong); }
.filter.is-active {
  color: #06101f;
  background: linear-gradient(120deg, var(--brand), #818cf8);
  border-color: transparent;
  box-shadow: 0 8px 22px rgba(34, 211, 238, 0.22);
}

/* Grid de productos */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(252px, 1fr));
  gap: 20px;
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015));
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}
.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
}

.card-art {
  position: relative;
  height: 150px;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, #121b30, #080d19);
  overflow: hidden;
}
.card-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(75% 105% at 50% 120%, var(--a), transparent 70%);
  opacity: 0.5;
}
.card-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: 0.22;
}

.logo-tile {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 74%;
  max-width: 186px;
  height: 78px;
  padding: 13px 20px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}
.logo-tile img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}
.card-initials {
  position: relative;
  z-index: 1;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  text-shadow: 0 4px 22px rgba(0, 0, 0, 0.35);
}

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  padding: 5px 11px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #06101f;
  background: #fff;
}

.card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 18px 18px 20px;
  gap: 12px;
}
.card-cat {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
}
.card-title { margin: 0; font-size: 1.05rem; letter-spacing: -0.01em; }

.card-features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.82rem;
}
.card-features li { display: flex; gap: 8px; align-items: flex-start; }
.card-features li::before {
  content: "✓";
  color: var(--brand);
  font-weight: 700;
  font-size: 0.78rem;
  line-height: 1.5;
}

.card-price-row {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin-top: auto;
  padding-top: 6px;
}
.card-old {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 0.82rem;
}
.card-price { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.03em; }
.card-price small { font-size: 0.78rem; font-weight: 500; color: var(--muted); margin-left: 2px; }

.card-body .btn { width: 100%; margin-top: 4px; }

.grid-note { text-align: center; color: var(--muted); margin: 30px 0 0; font-size: 0.9rem; }
.grid-note a { color: var(--brand); font-weight: 600; }
.grid-note a:hover { text-decoration: underline; }

/* ===================== Combo ===================== */
.combo-band {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 38px 42px;
  border-radius: 26px;
  border: 1px solid rgba(139, 92, 246, 0.35);
  background:
    radial-gradient(500px 220px at 88% 0%, rgba(34, 211, 238, 0.2), transparent 70%),
    linear-gradient(115deg, rgba(99, 102, 241, 0.28), rgba(139, 92, 246, 0.16) 55%, rgba(244, 114, 182, 0.14));
  box-shadow: var(--shadow);
}
.combo-tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.combo-copy h3 { margin: 0 0 8px; font-size: clamp(1.3rem, 2.6vw, 1.75rem); letter-spacing: -0.02em; }
.combo-copy p { margin: 0; color: #cfd8f5; }

.combo-price { text-align: right; display: grid; gap: 4px; justify-items: end; }
.combo-old { color: #c3b7f0; text-decoration: line-through; font-size: 0.85rem; }
.combo-price strong { font-size: 2.1rem; letter-spacing: -0.04em; line-height: 1.1; }
.combo-price strong small { font-size: 0.85rem; font-weight: 500; color: #cfd8f5; }
.combo-price .btn { margin-top: 10px; }

/* ===================== Pasos ===================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.step {
  position: relative;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
}
.step-num {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--brand);
}
.step h3 { margin: 0 0 8px; font-size: 1.12rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ===================== Beneficios ===================== */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.feature {
  padding: 26px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.015));
}
.feature-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  margin-bottom: 16px;
  color: var(--brand);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.22);
}
.feature h3 { margin: 0 0 8px; font-size: 1.02rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.88rem; }

/* ===================== FAQ ===================== */
.faq-wrap { max-width: 820px; }

.faq {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  padding: 0 20px;
  margin-bottom: 10px;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.faq[open] { border-color: rgba(34, 211, 238, 0.3); background: rgba(34, 211, 238, 0.04); }

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.98rem;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 10px;
  height: 1.6px;
  background: var(--muted);
  transform: translate(-50%, -50%);
  transition: transform 0.25s ease;
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(0); }
.faq[open] .faq-icon { border-color: var(--brand); }

.faq p {
  margin: 0;
  padding: 0 0 18px;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 62ch;
}

/* ===================== CTA final ===================== */
.final-cta {
  text-align: center;
  padding: 56px 28px;
  border-radius: 30px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  background:
    radial-gradient(600px 260px at 50% -20%, rgba(34, 211, 238, 0.22), transparent 70%),
    linear-gradient(180deg, rgba(99, 102, 241, 0.14), rgba(7, 11, 22, 0.2));
  box-shadow: var(--shadow);
}
.final-cta h2 { margin: 0 0 10px; font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.03em; }
.final-cta p { margin: 0 auto 24px; color: var(--muted); max-width: 46ch; }
.final-note { margin: 18px 0 0 !important; font-size: 0.82rem; color: var(--muted); }

/* ===================== Footer ===================== */
.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  background: rgba(4, 7, 14, 0.6);
  padding: 52px 0 26px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 36px;
}
.footer-brand p { color: var(--muted); font-size: 0.9rem; margin: 16px 0; max-width: 30ch; }
.footer-wa { color: var(--brand); font-weight: 600; font-size: 0.94rem; }

.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-col h4 {
  margin: 0 0 4px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-col a,
.footer-col span { font-size: 0.9rem; color: #c3cfe8; }
.footer-col a:hover { color: var(--brand); }
.muted { color: var(--muted) !important; }

.payments { display: flex; flex-wrap: wrap; gap: 7px; }
.payments span {
  padding: 5px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.76rem;
  font-weight: 600;
  color: #c3cfe8;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
}

/* ===================== Toast ===================== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  z-index: 100;
  transform: translate(-50%, 140%);
  padding: 12px 20px;
  border-radius: 12px;
  background: #101a30;
  border: 1px solid var(--line-strong);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
  font-size: 0.88rem;
  max-width: min(92vw, 460px);
  text-align: center;
  transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}
.toast.is-visible { transform: translate(-50%, 0); }

/* ===================== Animación de entrada ===================== */
/* Visible por defecto: si el JS falla, el contenido se ve igual.
   Solo se oculta cuando el JS marca el elemento para animar. */
.reveal { opacity: 1; transform: none; }
.reveal.pre-anim {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.pre-anim.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ===================== Responsive ===================== */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-copy { text-align: center; }
  .hero-copy .lead { margin-inline: auto; }
  .hero-cta, .hero-trust { justify-content: center; }
  .hero-visual { order: 2; }
  .device { transform: none; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (max-width: 820px) {
  .nav {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 20px 18px;
    background: rgba(7, 11, 22, 0.97);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .nav a:last-child { border-bottom: 0; }
  .menu-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }
}

@media (max-width: 480px) {
  .brand-text { font-size: 0.92rem; }
  .brand img { width: 38px; height: 38px; }
}

@media (max-width: 640px) {
  .container { width: min(1160px, 100% - 32px); }
  .hero { padding: 54px 0 48px; }
  .hero h1 { font-size: clamp(1.85rem, 8.2vw, 2.6rem); }
  .device { max-width: 100%; }
  .float-card { display: none; }
  .section { padding: 56px 0; }
  .combo-band { grid-template-columns: 1fr; padding: 28px 24px; }
  .combo-price { justify-items: start; text-align: left; }
  .steps { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .float-1 { left: 0; }
  .float-2 { right: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; }
  .final-cta { padding: 42px 20px; }
  .product-grid { grid-template-columns: 1fr; }
}