:root {
  --bg: #0b0f17; --bg2: #121826; --card: #161d2e; --line: #243049;
  --txt: #e9edf5; --muted: #9aa6bd; --a1: #4d8dff; --a2: #7b5cff; --ok: #34c77b; --err: #ff6b6b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--txt); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: #8fb6ff; }
img { max-width: 100%; }
.oculto { display: none !important; }

/* Cabecera */
.top { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px max(16px, calc(50% - 560px)); background: rgba(11,15,23,.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.marca { display: flex; align-items: center; gap: 10px; color: var(--txt); text-decoration: none; font-weight: 700; font-size: 20px; }
.marca img { border-radius: 10px; }
.top nav { display: flex; align-items: center; gap: 18px; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.top nav a:hover { color: var(--txt); }
.top nav .btn-s { color: #fff; background: linear-gradient(135deg, var(--a1), var(--a2)); padding: 7px 14px; border-radius: 10px; }
.top nav .idioma { border: 1px solid var(--line); padding: 3px 8px; border-radius: 8px; font-size: 13px; }
@media (max-width: 640px) { .top nav a:not(.btn-s):not(.idioma) { display: none; } }

main { padding: 0 max(16px, calc(50% - 560px)); }

/* Botones */
.btn, .btn-g { display: inline-block; padding: 14px 26px; border-radius: 14px; font-weight: 600; text-decoration: none; border: 0; font-size: 17px; cursor: pointer; }
.btn { color: #fff; background: linear-gradient(135deg, var(--a1), var(--a2)); box-shadow: 0 10px 30px rgba(77,141,255,.25); }
.btn:disabled { opacity: .6; cursor: default; }
.btn-g { color: var(--txt); background: var(--card); border: 1px solid var(--line); }
.btn.ancho { width: 100%; margin-top: 8px; }

/* Portada */
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; padding: 70px 0 50px; }
.badge { display: inline-block; font-size: 13px; color: #b9c8ff; background: rgba(77,141,255,.12); border: 1px solid rgba(77,141,255,.3); padding: 4px 12px; border-radius: 99px; }
.hero h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.05; margin: 18px 0 16px; letter-spacing: -1px; }
.hero p { color: var(--muted); font-size: 19px; margin: 0 0 26px; }
.ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-tv { display: flex; flex-direction: column; align-items: center; }
.tv { width: 100%; max-width: 460px; aspect-ratio: 16/9; background: #05070c; border: 10px solid #1d2333; border-radius: 16px; box-shadow: 0 30px 80px rgba(0,0,0,.5); overflow: hidden; }
.tv-pant { height: 100%; padding: 14px; background: radial-gradient(ellipse at 15% 0%, #1d3160 0, #0b0f17 60%); position: relative; }
.tv-top { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-bottom: 10px; }
.tv-top img { width: 22px; height: 22px; border-radius: 6px; }
.tv-fila { display: flex; gap: 8px; margin-bottom: 8px; }
.tv-fila i { flex: 1; height: 44px; border-radius: 8px; background: #1a2130; }
.tv-fila i:first-child { outline: 2px solid var(--a1); }
.tv-qr { position: absolute; right: 14px; bottom: 14px; display: flex; gap: 10px; align-items: center; background: rgba(0,0,0,.6); padding: 8px 12px; border-radius: 10px; }
.tv-qr .qr { width: 52px; height: 52px; background:
  conic-gradient(#fff 25%, #000 0 50%, #fff 0 75%, #000 0) 0 0/13px 13px; border: 4px solid #fff; border-radius: 3px; }
.tv-qr small { display: block; font-size: 10px; color: var(--muted); }
.tv-qr b { font-size: 16px; letter-spacing: 2px; color: #ffb3d1; }
.pata { width: 140px; height: 12px; background: #1d2333; border-radius: 0 0 10px 10px; }
@media (max-width: 820px) { .hero { grid-template-columns: 1fr; padding-top: 40px; } }

.bloque { padding: 50px 0; }
.bloque h2 { font-size: 32px; margin: 0 0 26px; letter-spacing: -.5px; }
.pasos { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pasos li, .feat { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 24px; }
.pasos .n { display: inline-flex; width: 36px; height: 36px; align-items: center; justify-content: center; border-radius: 50%; background: linear-gradient(135deg, var(--a1), var(--a2)); font-weight: 700; }
.pasos h3, .feat h3 { margin: 14px 0 6px; font-size: 19px; }
.pasos p, .feat p { margin: 0; color: var(--muted); }
.feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feat .ico { font-size: 28px; }
@media (max-width: 820px) { .pasos, .feats { grid-template-columns: 1fr; } }

.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--muted); margin: 10px 0 0; }
.cta-final { text-align: center; padding: 20px 0 60px; }

/* Conectar */
.conectar { max-width: 560px; margin: 0 auto; padding: 40px 0 60px; }
.conectar h1 { font-size: 34px; margin: 0 0 8px; letter-spacing: -.5px; }
.sub { color: var(--muted); margin: 0 0 24px; }
form { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
label { display: block; font-size: 14px; color: var(--muted); margin: 14px 0 6px; }
input, textarea { width: 100%; font: inherit; color: var(--txt); background: var(--bg2); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; outline: none; }
input:focus, textarea:focus { border-color: var(--a1); box-shadow: 0 0 0 3px rgba(77,141,255,.2); }
textarea { resize: vertical; word-break: break-all; }
input.code { font-size: 30px; letter-spacing: 10px; text-align: center; font-weight: 700; text-transform: uppercase; }
.tabs { display: flex; gap: 6px; margin: 20px 0 0; background: var(--bg2); padding: 5px; border-radius: 12px; }
.tab { flex: 1; font: inherit; font-size: 15px; color: var(--muted); background: none; border: 0; padding: 9px; border-radius: 9px; cursor: pointer; }
.tab.on { background: var(--card); color: var(--txt); box-shadow: 0 1px 4px rgba(0,0,0,.3); }
.dos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ayuda { font-size: 13px; color: var(--muted); margin: 6px 0 14px; }
#msg { margin-top: 14px; min-height: 24px; font-weight: 600; }
#msg.ok { color: var(--ok); } #msg.error { color: var(--err); }
.nota { font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.espacio-ad { margin: 40px 0; }       /* separado del botón a propósito */
.caja-ayuda { background: var(--bg2); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.caja-ayuda h2 { font-size: 18px; margin: 0 0 6px; }
.caja-ayuda p { color: var(--muted); margin: 0; }

/* Legal */
.legal { max-width: 760px; margin: 0 auto; padding: 40px 0 60px; }
.legal h2 { font-size: 21px; margin-top: 30px; }
.legal p { color: #c5cede; }

/* Anuncios: sin AdSense no ocupan espacio */
.ad:empty { display: none; }
.ad { margin: 20px 0; min-height: 90px; }

.pie { border-top: 1px solid var(--line); padding: 30px max(16px, calc(50% - 560px)); color: var(--muted); font-size: 14px; text-align: center; }
.pie a { color: var(--muted); }
.pie .nota { margin: 0 0 10px; }
.copy { opacity: .6; }