:root {
  --bg: #070b1a;
  --bg-2: #0b1230;
  --card: rgba(255, 255, 255, .045);
  --card-strong: rgba(255, 255, 255, .07);
  --line: rgba(148, 163, 255, .2);
  --text: #e9edff;
  --muted: #a7b0d8;
  --blue: #5b84ff;
  --violet: #8b6cf6;
  --cyan: #7ee0ff;
  --ok: #6ee7b7;
  --radius: 16px;
  --max: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(900px 520px at 85% -8%, rgba(139, 108, 246, .22), transparent 60%),
    radial-gradient(800px 520px at -5% 12%, rgba(91, 132, 255, .2), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font: 400 1.0625rem/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: #fff; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: #fff; color: #000; padding: 8px 14px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 12px; }
.wrap { width: min(100% - 40px, var(--max)); margin-inline: auto; }
section { padding: 84px 0; scroll-margin-top: 70px; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.2rem, 5.4vw, 3.9rem); font-weight: 750; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 650; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
.lead { font-size: clamp(1.08rem, 1.7vw, 1.28rem); color: var(--muted); max-width: 62ch; }
.eyebrow { display: inline-block; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin-bottom: 14px; font-weight: 600; }
.grad { background: linear-gradient(95deg, #9db6ff, #b79bff 55%, #7ee0ff); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Cabecera */
header.top { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); background: rgba(7, 11, 26, .72); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; height: 62px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: -.01em; font-size: 1.12rem; }
.brand svg { width: 28px; height: 28px; }
nav.main { display: flex; gap: 22px; align-items: center; }
nav.main a { color: var(--muted); text-decoration: none; font-size: .95rem; }
nav.main a:hover { color: #fff; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px; border-radius: 12px; border: 1px solid var(--line); background: var(--card-strong); color: var(--text); font-weight: 600; font-size: 1rem; text-decoration: none; transition: transform .2s, border-color .2s, background .2s; }
.btn:hover { transform: translateY(-2px); border-color: rgba(126, 224, 255, .6); color: #fff; }
.btn.primary { background: linear-gradient(135deg, var(--blue), var(--violet)); border-color: transparent; color: #fff; box-shadow: 0 10px 30px rgba(91, 132, 255, .28); }
.btn.primary:hover { border-color: transparent; box-shadow: 0 14px 36px rgba(139, 108, 246, .38); }
.btn.small { padding: 8px 16px; font-size: .92rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Hero */
.hero { padding: 76px 0 70px; }
.hero .grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; }
.hero-visual { position: relative; }
.hero-visual svg { width: 100%; height: auto; display: block; }

/* Diagramas */
.node rect { fill: rgba(15, 22, 52, .92); stroke: var(--line); stroke-width: 1.2; }
.node.agent rect { stroke: rgba(139, 108, 246, .85); fill: rgba(33, 22, 76, .92); }
.node.code rect { stroke: rgba(91, 132, 255, .85); }
.node.memory rect { stroke: rgba(126, 224, 255, .7); }
.node text { fill: var(--text); font: 600 15px system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.node text.sub { fill: var(--muted); font-weight: 400; font-size: 12px; }
.flow { fill: none; stroke: rgba(150, 168, 255, .55); stroke-width: 1.6; stroke-dasharray: 4 7; animation: dash 1.6s linear infinite; }
.flow.violet { stroke: rgba(170, 140, 255, .8); }
.pulse { transform-origin: center; transform-box: fill-box; animation: pulse 3.2s ease-in-out infinite; }
@keyframes dash { to { stroke-dashoffset: -22; } }
@keyframes pulse { 0%, 100% { opacity: .55; transform: scale(1); } 50% { opacity: 1; transform: scale(1.06); } }

/* Mini interfaz ilustrativa */
.ui { margin-top: 18px; border: 1px solid var(--line); border-radius: 14px; background: rgba(8, 13, 34, .85); overflow: hidden; font-size: .88rem; }
.ui-bar { display: flex; align-items: center; gap: 7px; padding: 9px 13px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .22); }
.ui-body { padding: 13px 14px; display: grid; gap: 9px; }
.ui .plan { color: var(--muted); }
.ui .plan b { color: var(--text); font-weight: 600; }
.code-diff { font: .82rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; border-radius: 9px; overflow: hidden; border: 1px solid var(--line); }
.code-diff div { padding: 1px 12px; white-space: pre; overflow: hidden; text-overflow: ellipsis; }
.code-diff .del { background: rgba(248, 113, 113, .12); color: #fca5a5; }
.code-diff .add { background: rgba(110, 231, 183, .12); color: #86efac; }
.ui-actions { display: flex; gap: 8px; }
.pill { padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line); font-size: .78rem; color: var(--muted); }
.pill.ok { border-color: rgba(110, 231, 183, .5); color: var(--ok); }
.caption { color: var(--muted); font-size: .82rem; margin-top: 8px; }

/* Tarjetas */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); gap: 18px; margin-top: 34px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; display: flex; flex-direction: column; gap: 6px; transition: transform .25s, border-color .25s, background .25s; }
.card:hover { transform: translateY(-4px); border-color: rgba(126, 224, 255, .45); background: var(--card-strong); }
.card .tag { font-size: .78rem; color: var(--muted); letter-spacing: .04em; }
.card p { color: var(--muted); font-size: .98rem; margin: 0; }
.card .q { color: var(--text); font-weight: 560; font-size: 1.02rem; margin-bottom: .5em; }
.badge { align-self: flex-start; margin-top: 12px; font-size: .78rem; font-weight: 600; padding: 4px 11px; border-radius: 999px; border: 1px solid; }
.badge.dev { color: #9db6ff; border-color: rgba(91, 132, 255, .55); background: rgba(91, 132, 255, .1); }
.badge.proto { color: var(--ok); border-color: rgba(110, 231, 183, .5); background: rgba(110, 231, 183, .08); }
.badge.res { color: #c4b2ff; border-color: rgba(139, 108, 246, .6); background: rgba(139, 108, 246, .1); }
.card .mark { width: 40px; height: 40px; margin-bottom: 10px; }
.note { color: var(--muted); font-size: .93rem; border-left: 2px solid var(--line); padding-left: 14px; margin-top: 26px; max-width: 70ch; }

/* Cómo funciona */
.flow-wrap { margin-top: 34px; border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .015)); padding: 22px; }
.flow-wrap svg { width: 100%; height: auto; display: block; }
.steps { list-style: none; margin: 0; padding: 0; display: none; gap: 10px; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
.steps li small { display: block; color: var(--muted); font-size: .85rem; }
.legend { margin-top: 18px; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 8px 22px; color: var(--muted); font-size: .94rem; }
.legend span::before { content: "→ "; color: var(--cyan); }
blockquote.principle { margin: 34px 0 0; padding: 22px 26px; border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(135deg, rgba(91, 132, 255, .12), rgba(139, 108, 246, .12)); font-size: clamp(1.1rem, 2vw, 1.4rem); font-weight: 560; letter-spacing: -.01em; }

/* Memoria */
.versions { display: grid; grid-template-columns: 1fr auto 1fr; gap: 18px; align-items: stretch; margin: 34px 0 10px; }
.ver { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--card); }
.ver .label { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.ver .txt { font-size: 1.12rem; margin-top: 6px; font-weight: 560; }
.ver.old { opacity: .62; }
.ver.old .txt { text-decoration: line-through; text-decoration-color: rgba(248, 113, 113, .7); }
.ver.new { border-color: rgba(110, 231, 183, .55); background: rgba(110, 231, 183, .06); }
.arrow { display: grid; place-items: center; color: var(--cyan); font-size: 1.9rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip { font-size: .8rem; padding: 4px 11px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: rgba(255, 255, 255, .03); }
.chip.warn { border-color: rgba(251, 191, 36, .55); color: #fcd34d; }
.chip.ok { border-color: rgba(110, 231, 183, .5); color: var(--ok); }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; }

/* Modelos y principios */
.models { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; margin-top: 30px; }
.model { border: 1px dashed rgba(148, 163, 255, .4); border-radius: var(--radius); padding: 20px; }
.model h3 { font-size: 1.05rem; margin-bottom: .2em; }
.model p { color: var(--muted); font-size: .92rem; margin: 0; }
.principles { display: grid; grid-template-columns: repeat(auto-fit, minmax(235px, 1fr)); gap: 18px; margin-top: 32px; }
.principle { border-top: 2px solid; border-image: linear-gradient(90deg, var(--blue), var(--violet)) 1; padding: 18px 4px 0; }
.principle p { color: var(--muted); margin: 0; }

/* Final y contacto */
.cta { text-align: center; border: 1px solid var(--line); border-radius: 24px; padding: 64px 28px; background: radial-gradient(600px 260px at 50% 0%, rgba(139, 108, 246, .22), transparent 70%), var(--card); }
.cta .lead { margin-inline: auto; }
.cta .actions { justify-content: center; }
.contact { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; align-items: center; }
.mail { display: inline-block; font-size: clamp(1.3rem, 3vw, 1.9rem); font-weight: 650; letter-spacing: -.01em; color: #fff; text-decoration: none; border-bottom: 2px solid var(--violet); padding-bottom: 2px; }
.mail:hover { border-bottom-color: var(--cyan); }

/* Pie */
footer { border-top: 1px solid var(--line); padding: 42px 0 54px; color: var(--muted); font-size: .95rem; }
footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: start; }
footer .links { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: flex-end; max-width: 520px; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: #fff; }
footer .soon { opacity: .55; cursor: default; }
footer .soon small { font-size: .72rem; margin-left: 4px; }
.fb { color: var(--text); font-weight: 700; font-size: 1.05rem; }
footer .addr { font-size: .88rem; margin-top: 4px; }
nav.main a.lang { border: 1px solid var(--line); border-radius: 8px; padding: 3px 9px; font-size: .82rem; font-weight: 600; letter-spacing: .04em; }
nav.main a.lang:hover { border-color: rgba(126, 224, 255, .6); }

/* Aviso legal */
.legal { padding: 64px 0 80px; }
.legal .wrap { max-width: 820px; }
.legal h1 { font-size: clamp(1.9rem, 4.4vw, 2.8rem); }
.legal h2 { font-size: 1.3rem; margin-top: 2.2em; }
.legal dl { display: grid; grid-template-columns: minmax(150px, 220px) 1fr; gap: 12px 24px; margin: 26px 0 0; padding: 22px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.legal dt { color: var(--muted); font-size: .92rem; }
.legal dd { margin: 0; overflow-wrap: anywhere; }
.legal p { color: var(--muted); }
.legal .back { display: inline-block; margin-bottom: 22px; font-size: .95rem; }

@media (max-width: 900px) {
  section { padding: 62px 0; }
  .hero .grid, .cols, .contact { grid-template-columns: 1fr; }
  nav.main a:not(.btn):not(.lang) { display: none; }
  .legal dl { grid-template-columns: 1fr; gap: 2px; }
  .legal dt { margin-top: 12px; }
  .versions { grid-template-columns: 1fr; }
  .arrow { transform: rotate(90deg); font-size: 1.5rem; }
  .flow-wrap svg { display: none; }
  .steps { display: grid; }
  footer .wrap { grid-template-columns: 1fr; }
  footer .links { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .flow, .pulse { animation: none; }
  .card, .btn { transition: none; }
}