/* Chess Coach · landing. Claro con secciones oscuras, titulares en serif, acento azul eléctrico. */
:root {
  --bg: #f4f4f2;
  --surface: #ffffff;
  --ink: #141414;
  --muted: #5f6368;
  --line: #e2e2de;
  --accent: #0a3cff;
  --accent-ink: #ffffff;
  --accent-soft: #e8edff;
  --dark: #0d0e10;
  --dark-2: #16181b;
  --dark-3: #1f2226;
  --dark-line: #2b2e33;
  --dark-muted: #9aa0a8;
  --good: #3fa34d;
  --bad: #e04f3d;
  --radius: 16px;
  --f-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --f-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--f-body); -webkit-font-smoothing: antialiased; }
img, svg { display: block; }
a { color: inherit; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* Logotipo: solo letras */
.logo { font-family: var(--f-display); font-size: 27px; line-height: 1; letter-spacing: -.02em; color: var(--ink); text-decoration: none; white-space: nowrap; }
.logo img { display: none; }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 46px; padding: 0 20px; border-radius: 12px; border: 1px solid transparent;
  font: 600 15px/1 var(--f-body); text-decoration: none; cursor: pointer; transition: transform .15s ease, background .15s ease, box-shadow .15s ease; white-space: nowrap; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 1px 0 rgba(255,255,255,.25) inset, 0 8px 20px -8px rgba(10,60,255,.6); }
.btn.primary:hover { background: #0030e6; }
.btn.ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: #cfcfca; }
.btn.light { background: #fff; color: var(--ink); }
.btn.small { height: 38px; padding: 0 14px; font-size: 14px; border-radius: 10px; }

/* Cabecera */
header.top { position: sticky; top: 0; z-index: 30; background: rgba(244,244,242,.94); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; transition: border-color .2s; }
header.top.scrolled { border-bottom-color: var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 64px; }
.top-links { display: flex; align-items: center; gap: 26px; font-size: 14.5px; font-weight: 500; }
.top-links a { text-decoration: none; color: var(--muted); }
.top-links a:hover { color: var(--ink); }
.top-links .lang { color: var(--ink); }
@media (max-width: 860px) { .top-links a:not(.btn):not(.lang) { display: none; } }
@media (max-width: 480px) { header.top .wrap { gap: 10px; } .top-links { gap: 10px; } .top-links .btn.small { padding: 0 11px; } }

/* Hero */
.hero { padding: 72px 0 40px; text-align: center; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px 6px 8px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line);
  font-size: 13.5px; font-weight: 500; text-decoration: none; color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.pill .new { background: var(--accent); color: #fff; font-size: 11.5px; font-weight: 700; padding: 2px 8px; border-radius: 999px; letter-spacing: .02em; }
.pill:hover { border-color: #cfcfca; }
h1, h2, h3 { margin: 0; font-weight: 400; }
h1, h2 { font-family: var(--f-display); letter-spacing: -.035em; line-height: .98; text-wrap: balance; }
h1 { font-size: clamp(48px, 8.4vw, 104px); margin: 26px auto 22px; max-width: 12.5em; }
h1 em, h2 em { font-style: italic; color: var(--accent); }
h2 { font-size: clamp(38px, 5.6vw, 68px); }
h3 { font: 600 18px/1.3 var(--f-body); letter-spacing: -.01em; }
.lede { font-size: clamp(17px, 1.6vw, 19.5px); color: var(--muted); max-width: 37em; margin: 0 auto 34px; line-height: 1.55; }

/* Formulario de inicio */
.start { display: flex; align-items: center; gap: 8px; max-width: 640px; margin: 0 auto; padding: 8px; background: var(--surface); border: 2px solid var(--accent);
  border-radius: 18px; box-shadow: 0 0 0 6px rgba(10,60,255,.08), 0 20px 40px -24px rgba(10,60,255,.45); }
.seg { display: flex; background: var(--bg); border-radius: 11px; padding: 3px; flex-shrink: 0; }
.seg button { border: 0; background: transparent; font: 600 13.5px/1 var(--f-body); color: var(--muted); padding: 10px 12px; border-radius: 9px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.start input { flex: 1; min-width: 0; border: 0; outline: 0; font: 400 17px var(--f-body); color: var(--ink); background: transparent; padding: 0 8px; height: 46px; }
.start input::placeholder { color: #a3a6ab; }
@media (max-width: 620px) {
  .start { flex-wrap: wrap; }
  .start input { flex-basis: 100%; order: -1; border-bottom: 1px solid var(--line); }
  .seg { flex: 1; } .seg button { flex: 1; }
  .start .btn { flex-basis: 100%; }
  .pill { font-size: 12.5px; }
}
.props { list-style: none; padding: 0; margin: 40px auto 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 940px; text-align: left; }
.props li { display: flex; gap: 12px; padding: 4px 22px; }
.props li + li { border-left: 1px solid var(--line); }
.props .ico { flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.props b { display: block; font-size: 14.5px; }
.props span { display: block; font-size: 14px; color: var(--muted); line-height: 1.45; }
@media (max-width: 760px) { .props { grid-template-columns: minmax(0, 1fr); gap: 14px; max-width: 420px; } .props li + li { border-left: 0; } }

/* Funciona con */
.works { padding: 34px 0 48px; }
.works .wrap { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 14px 40px; }
.works .label { font-size: 13px; color: var(--muted); font-weight: 500; }
.works ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 40px; }
.works li { display: flex; align-items: center; gap: 10px; font: 700 20px/1 var(--f-body); letter-spacing: -.02em; color: #1d1f23; }
.works .brand { width: 28px; height: 28px; flex-shrink: 0; }

/* Transición de píxeles */
.pixels { height: 180px; position: relative; background: linear-gradient(to bottom, var(--bg), var(--bg) 18%, var(--dark) 100%); }
.pixels canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* Secciones oscuras */
.dark { background: var(--dark); color: #f2f2f0; }
.dark .sub, .dark .muted { color: var(--dark-muted); }
.section { padding: 96px 0; }
.kicker { display: inline-flex; align-items: center; gap: 8px; font: 500 12.5px/1 var(--f-mono); letter-spacing: .02em; padding: 6px 10px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--line); color: var(--muted); margin: 0 0 20px; }
.dark .kicker { background: var(--dark-3); border-color: var(--dark-line); color: var(--dark-muted); }
.head { max-width: 760px; margin-bottom: 48px; }
.head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sub { font-size: 18px; color: var(--muted); margin: 18px 0 0; max-width: 38em; }
.head.center .sub { margin-left: auto; margin-right: auto; }

/* Ventana de conversación con la demo */
.window { background: #faf9f7; color: var(--ink); border-radius: 20px; overflow: hidden; box-shadow: 0 40px 100px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.06); }
.window .bar { display: flex; align-items: center; gap: 8px; height: 44px; padding: 0 16px; background: #efede9; border-bottom: 1px solid #e2dfd9; }
.window .bar span { width: 11px; height: 11px; border-radius: 50%; background: #d5d2cc; }
.window .bar b { margin-left: 10px; font: 600 13px var(--f-body); color: #6b6964; }
.convo { padding: 26px clamp(14px, 3vw, 34px) 30px; max-width: 1040px; margin: 0 auto; }
.bubble { margin-left: auto; width: fit-content; max-width: 80%; background: #ebe8e2; padding: 11px 16px; border-radius: 16px; font-size: 15.5px; }
.tool { display: flex; align-items: center; gap: 8px; font: 500 12.5px var(--f-mono); color: #8a877f; margin: 22px 0 10px; }
.tool::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--good); }
.convo iframe { display: block; width: 100%; height: 760px; border: 1px solid #e4e1db; border-radius: 14px; background: #fff; }
.answer { margin-top: 20px; font-size: 16px; line-height: 1.6; max-width: 46em; }
.answer p { margin: 0 0 10px; }
.answer b { font-weight: 650; }
@media (max-width: 700px) { .convo iframe { height: 1300px; } }

/* Cifras */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 72px; border-top: 1px solid var(--dark-line); }
.stats div { padding: 28px 22px 0 0; }
.stats div + div { padding-left: 22px; border-left: 1px solid var(--dark-line); }
.stats strong { display: block; font: 400 clamp(48px, 6vw, 76px)/1 var(--f-display); letter-spacing: -.03em; }
.stats span { display: block; margin-top: 8px; color: var(--dark-muted); font-size: 14.5px; max-width: 16em; }
@media (max-width: 760px) { .stats { grid-template-columns: 1fr 1fr; } .stats div:nth-child(3) { border-left: 0; padding-left: 0; } }

/* Pasos */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.step { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px; min-height: 290px; }
.step .num { font: 500 12.5px var(--f-mono); color: var(--accent); }
.step p { margin: 0; color: var(--muted); font-size: 14.5px; }
.step .ui { margin-top: auto; background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 12px; font-size: 13px; }
@media (max-width: 980px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps { grid-template-columns: minmax(0, 1fr); } .step { min-height: 0; } }
.ui .url { min-width: 0; display: flex; align-items: center; gap: 8px; background: #fff; border: 1px solid var(--line); border-radius: 9px; padding: 6px 6px 6px 10px; font: 12px var(--f-mono); overflow: hidden; }
.ui .url code { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ui .url button { flex-shrink: 0; border: 0; background: var(--ink); color: #fff; font: 600 12px var(--f-body); padding: 6px 10px; border-radius: 7px; cursor: pointer; }
.ui .msg { background: #fff; border: 1px solid var(--line); border-radius: 12px 12px 4px 12px; padding: 8px 11px; margin-left: 18%; }
.ui .row { display: flex; align-items: center; gap: 8px; padding: 7px 4px; border-bottom: 1px solid var(--line); }
.ui .row:last-child { border-bottom: 0; }
.ui .row .r { margin-left: auto; font: 600 11px var(--f-mono); padding: 2px 7px; border-radius: 6px; }
.r.w { background: #e3f3e6; color: #2b7a37; } .r.l { background: #fbe6e3; color: #b3382c; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 5px 9px; border-radius: 999px; background: #fff; border: 1px solid var(--line); }
.chip.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }

/* Bento de funciones */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.cell { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 10px; overflow: hidden; }
.cell p { margin: 0; color: var(--muted); font-size: 15px; }
.cell.w4 { grid-column: span 4; } .cell.w3 { grid-column: span 3; } .cell.w2 { grid-column: span 2; }
.cell .tag { align-self: flex-start; font: 600 11.5px var(--f-body); padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.cell .tag.plus { background: #111; color: #fff; }
@media (max-width: 900px) { .cell.w4, .cell.w3, .cell.w2 { grid-column: span 6; } }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 8px; }
.compare > div { border-radius: 12px; padding: 14px 16px; font-size: 14.5px; }
.compare small { display: block; font: 600 11px var(--f-mono); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 6px; }
.compare .before { background: var(--bg); color: var(--muted); font-family: var(--f-mono); }
.compare .after { background: var(--accent-soft); color: #0c1b5e; }
@media (max-width: 560px) { .compare { grid-template-columns: 1fr; } }
.why { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; font-size: 14px; }
.why .q { align-self: flex-end; background: #ebe8e2; padding: 8px 12px; border-radius: 12px 12px 4px 12px; }
.why .a { background: var(--bg); padding: 10px 12px; border-radius: 12px 12px 12px 4px; }
.bars { display: grid; gap: 9px; margin-top: 8px; }
.bars div { display: grid; grid-template-columns: 92px 1fr 30px; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.bars i { height: 8px; border-radius: 4px; background: var(--bg); overflow: hidden; display: block; }
.bars i::after { content: ""; display: block; height: 100%; width: var(--v); background: var(--accent); border-radius: 4px; }
.bars b { color: var(--ink); font-weight: 600; text-align: right; }
.mini-board { display: grid; grid-template-columns: repeat(8, 1fr); width: 100%; max-width: 180px; aspect-ratio: 1; border-radius: 8px; overflow: hidden; margin-top: 8px; }
.mini-board span { display: grid; place-items: center; font-size: 16px; line-height: 1; }
.mini-board .l { background: #ebecd0; } .mini-board .d { background: #779556; }
.mini-board .t { box-shadow: inset 0 0 0 3px var(--accent); }

/* Precios */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 30px; display: flex; flex-direction: column; }
.plan h3 { font-size: 16px; }
.plan .price { font: 400 58px/1 var(--f-display); letter-spacing: -.03em; margin: 16px 0 4px; }
.plan .price small { font: 400 15px var(--f-body); color: var(--muted); letter-spacing: 0; }
.plan .for { color: var(--muted); font-size: 14.5px; margin: 0 0 20px; }
.plan ul { list-style: none; padding: 0; margin: 0 0 26px; display: grid; gap: 10px; font-size: 15px; }
.plan li { display: flex; gap: 10px; }
.plan li::before { content: ""; flex-shrink: 0; width: 18px; height: 18px; margin-top: 3px; border-radius: 50%; background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%230a3cff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px no-repeat; }
.plan .btn { margin-top: auto; width: 100%; }
.plan.pro { background: var(--dark); color: #f2f2f0; border-color: var(--dark); box-shadow: 0 30px 60px -30px rgba(10,60,255,.55); }
.plan.pro .for, .plan.pro .price small { color: var(--dark-muted); }
.plan.pro li::before { background-color: rgba(255,255,255,.1); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); }
.plan .badge { margin-left: 8px; font: 700 11px var(--f-body); padding: 3px 8px; border-radius: 999px; background: var(--accent); color: #fff; vertical-align: 2px; }
.fine { text-align: center; color: var(--muted); font-size: 14px; margin: 22px auto 0; max-width: 46em; }
@media (max-width: 900px) { .plans { grid-template-columns: minmax(0, 1fr); max-width: 460px; margin: 0 auto; } }

/* Preguntas */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; font-weight: 600; font-size: 17px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 26px/1 var(--f-body); color: var(--muted); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: -6px 0 22px; color: var(--muted); max-width: 44em; }

/* Empezar */
.install { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
.install ol { list-style: none; counter-reset: s; padding: 0; margin: 28px 0 0; display: grid; gap: 18px; }
.install li { counter-increment: s; display: grid; grid-template-columns: 32px 1fr; gap: 14px; color: var(--dark-muted); }
.install li::before { content: counter(s); width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--dark-3); border: 1px solid var(--dark-line); color: #fff; font: 600 14px var(--f-body); }
.install li b { color: #fff; font-weight: 600; }
.copybox { background: var(--dark-2); border: 1px solid var(--dark-line); border-radius: 16px; padding: 20px; }
.copybox + .copybox { margin-top: 14px; }
.copybox label { display: block; font: 500 12px var(--f-mono); color: var(--dark-muted); margin-bottom: 10px; letter-spacing: .02em; }
.copyrow { display: flex; gap: 10px; align-items: center; }
.copyrow code { flex: 1; min-width: 0; font: 13.5px/1.5 var(--f-mono); color: #fff; overflow-wrap: anywhere; }
.copybox.flash { box-shadow: 0 0 0 2px var(--accent); transition: box-shadow .3s; }
@media (max-width: 900px) { .install { grid-template-columns: minmax(0, 1fr); } }

/* Llamada final y pie */
.final { text-align: center; padding: 110px 0 96px; }
.final h2 { font-size: clamp(46px, 7vw, 92px); }
.final p { color: var(--dark-muted); margin: 18px auto 30px; }
footer { background: var(--dark); color: var(--dark-muted); border-top: 1px solid var(--dark-line); padding: 40px 0 48px; font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px 32px; align-items: flex-start; }
footer .logo { color: #fff; font-size: 24px; }
footer nav { display: flex; flex-wrap: wrap; gap: 10px 22px; }
footer a { color: var(--dark-muted); text-decoration: none; }
footer a:hover { color: #fff; }
footer .legal-note { flex-basis: 100%; font-size: 12.5px; color: #6f747c; max-width: 60em; }

/* Demo: aviso al pulsar las preguntas */
.demo-toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); max-width: min(560px, calc(100% - 32px)); z-index: 40;
  background: #fff; color: var(--ink); padding: 14px 18px; border-radius: 14px; font-size: 15px; box-shadow: 0 20px 50px rgba(0,0,0,.35); border-left: 4px solid var(--accent); }

/* Aparición suave */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }

/* Páginas legales */
.legal { max-width: 760px; padding-top: 40px; padding-bottom: 80px; }
.legal h1 { font-size: clamp(40px, 6vw, 64px); margin: 0 0 24px; text-align: left; }
.legal h2 { font-size: 30px; margin: 34px 0 10px; }
.legal p, .legal li { color: #3d4045; }

/* Inicio guiado */
.modal { width: min(560px, calc(100% - 32px)); max-height: calc(100dvh - 32px); overflow: auto; border: 0; border-radius: 22px; padding: 30px; background: var(--surface); color: var(--ink);
  box-shadow: 0 40px 120px rgba(0,0,0,.45); }
.modal::backdrop { background: rgba(13,14,16,.55); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }
.modal h2 { font-size: clamp(34px, 5vw, 46px); margin-bottom: 18px; }
.modal .kicker { margin-bottom: 14px; }
.mclose { position: absolute; top: 14px; right: 14px; width: 36px; height: 36px; border: 0; border-radius: 50%; background: var(--bg); font-size: 22px; line-height: 1; cursor: pointer; color: var(--muted); }
.who { display: flex; gap: 8px; align-items: center; background: var(--bg); border-radius: 14px; padding: 6px; margin-bottom: 18px; }
.who .seg { background: #e9e9e5; }
.who input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font: 400 16px var(--f-body); padding: 0 8px; height: 40px; color: var(--ink); }
.msteps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: m; }
.msteps > li { counter-increment: m; display: grid; grid-template-columns: 30px 1fr; gap: 6px 12px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; }
.msteps > li::before { content: counter(m); grid-row: span 2; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font: 700 14px var(--f-body); }
.msteps > li b { display: block; font-size: 16px; }
.msteps > li span { display: block; color: var(--muted); font-size: 14px; line-height: 1.45; margin-top: 2px; }
.msteps > li .btn { grid-column: 2; justify-self: start; margin-top: 6px; }
.msteps > li.done { border-color: color-mix(in srgb, var(--good) 45%, var(--line)); }
.msteps > li.done::before { content: "✓"; background: #e3f3e6; color: #2b7a37; }
.msteps > li.done .btn { background: var(--surface); color: var(--ink); border-color: var(--line); box-shadow: none; }
.msteps > li.next { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(10,60,255,.08); }
.mnote { color: var(--muted); font-size: 13px; margin: 16px 0 0; }
.copyrow .btn + .btn { margin-left: 0; }
.shake { animation: shake .35s ease; }
@keyframes shake { 0%,100% { transform: none; } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); } }
@media (max-width: 520px) { .modal { padding: 22px 18px; } .who { flex-wrap: wrap; } .who .seg { flex-basis: 100%; } .who input { border-top: 1px solid var(--line); } }

/* Plan recomendado */
.plan.featured { border: 2px solid var(--accent); box-shadow: 0 30px 70px -30px rgba(10,60,255,.5); position: relative; }
@media (min-width: 901px) { .plan.featured { transform: translateY(-10px); } .plan.featured.reveal:not(.in) { transform: translateY(8px); } }
.plan .badge.soft { background: var(--bg); color: var(--muted); border: 1px solid var(--line); }
/* Enlace del servidor en la ventana de inicio */
.cform { grid-column: 2; margin-top: 8px; border: 1px solid var(--line); border-radius: 14px; padding: 12px; background: #fbfaf8; }
.cf-title { font: 600 14px var(--f-body); margin-bottom: 8px; }
.cf-field { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 6px 6px 6px 10px; margin-bottom: 8px; }
.cf-field small { grid-column: 1 / -1; font: 500 11px var(--f-body); color: var(--muted); }
.cf-field code { min-width: 0; font: 13px var(--f-mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cf-field button { border: 0; background: var(--ink); color: #fff; font: 600 12px var(--f-body); padding: 6px 10px; border-radius: 7px; cursor: pointer; }
.cf-foot { font-size: 13px; color: var(--muted); }
.msteps > li .cf-foot b, .msteps > li .cf-title { display: inline; font-size: inherit; }
.msteps > li .cf-title { display: block; }


/* Both assistants: downward word carousel, intrinsic width from both names to prevent layout jumps. */
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.hero-assistant-line { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 0 .16em; line-height: 1.42; }
.assistant-rotator { display: block; width: max-content; max-width: 100%; height: 1.42em; overflow: hidden; text-align: left; color: var(--accent); }
.assistant-track { display: flex; flex-direction: column; transform: translateY(-66.666667%); animation: assistant-down 8s cubic-bezier(.22,.8,.25,1) infinite; }
.assistant-track > span { display: block; flex: 0 0 1.42em; height: 1.42em; line-height: 1.42; white-space: nowrap; }
.assistant-still { display: none; }
@keyframes assistant-down { 0%,38% { transform: translateY(-66.666667%); } 48%,88% { transform: translateY(-33.333333%); } 98%,100% { transform: translateY(0); } }
.motion-paused .assistant-track { animation: none; }
.motion-toggle { display: block; margin: -18px auto 25px; border: 0; border-bottom: 1px solid var(--line); padding: 3px 0; background: none; font: 12px var(--f-body); color: var(--muted); cursor: pointer; }
.hero h1 { max-width: 13em; }
.hero .lede { max-width: 40em; }
.assistant-picker { display: flex; gap: 10px; margin: 22px 0; }
.assistant-picker button { display: flex; align-items: center; justify-content: center; gap: 10px; flex: 1; padding: 15px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 13px; font: 600 16px var(--f-body); color: var(--ink); cursor: pointer; transition: border-color .2s, box-shadow .2s; }
.assistant-picker img { flex-shrink: 0; }
.assistant-picker button[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); background: var(--accent-soft); }
.assistant-picker button:hover { border-color: var(--accent); }
.assistant-choice-label { margin: 22px 0 -10px; font-size: 14px; font-weight: 600; }
.assistant-shortcut { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 600; }
.install-title { margin-top: 28px; font-size: 19px; }
.install-copy { padding-top: 46px; }
.install-note { font-size: 14px; margin: 16px 0 0; }
.connect-action { margin: 26px 0 0; }
.chat-launch { margin-top: 15px; }
.connection-status { font-size: 13px; min-height: 1.4em; margin: 10px 0 0; color: var(--muted); }
.dark .connection-status { color: var(--dark-muted); }
.dark .assistant-picker button { background: var(--dark-2); color: #fff; border-color: var(--dark-line); }
.dark .assistant-picker button[aria-pressed="true"] { background: #182341; border-color: #6f8cff; box-shadow: 0 0 0 1px #6f8cff; }
.dark .assistant-picker img[src$="chatgpt.svg"] { filter: invert(1); }
.msteps > li [data-assistant-name] { display: inline; font: inherit; color: inherit; }
.msteps > li .modal-guide, .msteps > li .modal-prompt, .msteps > li .connection-status { grid-column: 2; min-width: 0; }
.modal-guide ol { margin: 6px 0 0; padding-left: 19px; display: grid; gap: 9px; font-size: 13px; color: var(--muted); }
.modal-guide li span { display: inline; font: inherit; color: inherit; }
.msteps > li .modal-guide b { display: inline; font: inherit; font-weight: 600; color: var(--ink); }
.modal-prompt { margin-top: 10px; padding: 10px; background: var(--bg); border-radius: 10px; }
.modal-prompt code { display: block; overflow-wrap: anywhere; font: 12px/1.5 var(--f-mono); }
.modal-prompt button { border: 0; background: var(--ink); color: #fff; border-radius: 6px; padding: 5px 9px; margin-top: 8px; font: 600 12px var(--f-body); cursor: pointer; }
.btn:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid #6b8cff; outline-offset: 4px; }
@media (max-width: 900px) { .install-copy { padding-top: 0; } }
@media (max-width: 520px) { .assistant-picker button { padding: 12px 10px; font-size: 15px; gap: 8px; } .modal .btn { height: auto; min-height: 44px; padding: 12px; white-space: normal; line-height: 1.35; } .copyrow { flex-wrap: wrap; } .copyrow code { flex-basis: 70%; } }
@media (prefers-reduced-motion: reduce) {
  .assistant-rotator { width: auto; height: auto; overflow: visible; vertical-align: baseline; text-align: inherit; }
  .assistant-track, .motion-toggle { display: none; animation: none; }
  .assistant-still { display: inline; }
}

.chat-fallback { font-size: 14px; text-underline-offset: 3px; }
.msteps > li [data-chat-status], .msteps > li .chat-fallback { grid-column: 2; }