*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
body.no-scroll { overflow: hidden; }
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
::selection { background: rgba(var(--primary-rgb), .3); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; color: var(--fg); text-wrap: balance; }
h1 { font-size: clamp(2.75rem, 6vw, 5.25rem); line-height: 1.04; letter-spacing: -.025em; }
h2 { font-size: clamp(2.25rem, 4vw, 3rem); line-height: 1.1; letter-spacing: -.01em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); line-height: 1.2; }
h4 { font-size: 1.05rem; line-height: 1.3; font-weight: 600; }
.accent { color: var(--primary); }
.mono { font-family: var(--font-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-fg); }
.icon { width: 1em; height: 1em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.85; stroke-linecap: round; stroke-linejoin: round; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 200; padding: 10px 16px; border-radius: var(--r); background: var(--primary); color: var(--on-primary); font-weight: 600; transition: top .2s; }
.skip-link:focus { top: 12px; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; position: relative; }
.section { position: relative; padding-block: 96px; overflow: hidden; scroll-margin-top: var(--header-h); }
.section-tight { padding-block: 40px; }
.section-tint { background: linear-gradient(135deg, rgba(var(--primary-rgb), .05), transparent 45%, rgba(var(--primary-rgb), .025)); }
.section-tint-alt { background: linear-gradient(225deg, rgba(var(--primary-rgb), .055), transparent 50%); }
.section-head { max-width: 768px; margin: 0 auto 56px; text-align: center; }
.section-head p { margin-top: 16px; font-size: 1.125rem; color: var(--muted-fg); }

/* Manchas decorativas */
.blob { position: absolute; border-radius: 50%; background: rgba(var(--primary-rgb), .1); filter: blur(72px); pointer-events: none; }
.blob-a { width: 520px; height: 520px; top: 40px; left: -160px; }
.blob-b { width: 600px; height: 600px; top: 80px; right: -200px; background: rgba(var(--primary-rgb), .08); }
.blob-c { width: 420px; height: 420px; bottom: 10%; right: -140px; background: rgba(var(--primary-rgb), .06); }
.blob-d { width: 400px; height: 400px; top: 20%; left: -160px; background: rgba(var(--primary-rgb), .06); }
.blob-e { width: 520px; height: 520px; top: 0; left: 30%; background: rgba(var(--primary-rgb), .06); }

/* Entrada al hacer scroll (solo si hay JavaScript) */
.js [data-reveal] { opacity: 0; transition: opacity .8s var(--ease), transform .6s var(--ease); will-change: opacity, transform; }
.js [data-reveal="up"] { transform: translateY(24px); }
.js [data-reveal="scale"] { transform: scale(.95); }
.js [data-reveal].is-in { opacity: 1; transform: none; }

@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes ping { 75%, 100% { transform: scale(2.2); opacity: 0; } }
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes counter-orbit { to { transform: rotate(-360deg); } }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: .35; } 30% { transform: translateY(-4px); opacity: 1; } }
@keyframes bubble-in { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }

@media (max-width: 767px) {
    .container { padding-inline: 16px; }
    .section { padding-block: 60px; }
    .section-tight { padding-block: 24px; }
    .section-head { margin-bottom: 36px; }
    .section-head p { font-size: 1rem; }
}

/* Sin animaciones para quien las tiene desactivadas en su sistema (salvo con ?motion=1) */
@media (prefers-reduced-motion: reduce) {
    html:not(.force-motion) { scroll-behavior: auto; }
    html:not(.force-motion) *, html:not(.force-motion) *::before, html:not(.force-motion) *::after { animation: none !important; transition-duration: .01ms !important; }
    html:not(.force-motion).js [data-reveal] { opacity: 1; transform: none; }
}