:root {
  --bg: #f6f8f9; --surface: #fff; --surface-2: #eef3f4; --border: #dbe3e6;
  --text: #11191f; --muted: #55646f;
  --primary: #0f766e; --primary-hover: #0b5f58; --primary-fg: #fff; --primary-soft: #dcf3f0;
  --wa: #128c4a; --wa-fg: #fff; --bubble-in: #fff; --bubble-out: #d9fdd3; --chat-bg: #efe9e0;
  --warn: #a35a06; --warn-soft: #fdf0cf;
  --radius: 16px; --shadow: 0 10px 30px rgb(15 40 40 / .08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1317; --surface: #141c22; --surface-2: #1b252c; --border: #27333c;
    --text: #e8eef2; --muted: #9aa9b4;
    --primary: #2dd4bf; --primary-hover: #5eead4; --primary-fg: #04201c; --primary-soft: #12332f;
    --wa: #25d366; --wa-fg: #04210f; --bubble-in: #202c33; --bubble-out: #005c4b; --chat-bg: #0b141a;
    --warn: #f5b84a; --warn-soft: #36280d; --shadow: 0 10px 30px rgb(0 0 0 / .35);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); }
.wrap { width: min(1120px, 100% - 2rem); margin-inline: auto; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 1rem; top: 1rem; background: var(--surface); padding: .5rem 1rem; border-radius: 8px; z-index: 10; }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; border-radius: 6px; }

/* Cabecera */
header.top { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: -.01em; color: var(--text); text-decoration: none; }
.brand img { width: 30px; height: 30px; }
nav.main { display: flex; align-items: center; gap: 1.4rem; font-size: .95rem; }
nav.main a { color: var(--muted); text-decoration: none; } nav.main a:hover { color: var(--text); }
nav.main a.btn-wa, nav.main a.btn-wa:hover { color: var(--wa-fg); }
@media (max-width: 760px) { nav.main a.hide-sm { display: none; } }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 48px; padding: .75rem 1.4rem; border-radius: 999px; font-weight: 600; text-decoration: none; border: 1px solid transparent; transition: transform .12s, background .12s; cursor: pointer; font-size: 1rem; }
.btn:hover { transform: translateY(-1px); }
.btn-wa { background: var(--wa); color: var(--wa-fg); }
.btn-wa[aria-disabled="true"] { opacity: .75; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn svg { width: 20px; height: 20px; flex: none; }

/* Héroe */
.hero { padding: 4.5rem 0 3rem; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } .hero { padding-top: 2.5rem; } }
.eyebrow { display: inline-block; background: var(--primary-soft); color: var(--primary); font-weight: 600; font-size: .85rem; padding: .3rem .8rem; border-radius: 999px; margin-bottom: 1rem; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.1; letter-spacing: -.03em; margin: 0 0 1.1rem; }
h1 em { font-style: normal; color: var(--primary); }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 34rem; margin: 0 0 1.8rem; }
.cta { display: flex; flex-wrap: wrap; gap: .8rem; }
.fine { font-size: .88rem; color: var(--muted); margin-top: 1rem; }

/* Mockup de WhatsApp */
.phone { background: var(--chat-bg); border: 1px solid var(--border); border-radius: 28px; box-shadow: var(--shadow); padding: 1rem; max-width: 380px; margin-inline: auto; }
.phone .head { display: flex; align-items: center; gap: .6rem; padding: .3rem .4rem .8rem; border-bottom: 1px solid var(--border); margin-bottom: .8rem; }
.avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--primary); color: var(--primary-fg); display: grid; place-items: center; font-weight: 700; }
.head b { display: block; line-height: 1.2; } .head small { color: var(--muted); }
.msgs { display: flex; flex-direction: column; gap: .5rem; font-size: .93rem; }
.m { max-width: 86%; padding: .5rem .75rem; border-radius: 12px; box-shadow: 0 1px 1px rgb(0 0 0 / .08); }
.m.in { background: var(--bubble-in); border-top-left-radius: 3px; align-self: flex-start; }
.m.out { background: var(--bubble-out); border-top-right-radius: 3px; align-self: flex-end; }
.m time { display: block; font-size: .72rem; color: var(--muted); text-align: right; margin-top: .15rem; }
.voice { display: flex; align-items: center; gap: .6rem; } .voice .wave { flex: 1; height: 22px; background: repeating-linear-gradient(90deg, var(--muted) 0 2px, transparent 2px 5px); opacity: .55; mask-image: linear-gradient(90deg, #000, #000); border-radius: 4px; }
.transcript { font-size: .78rem; color: var(--muted); font-style: italic; margin-top: .25rem; }
.chips { display: flex; gap: .4rem; flex-wrap: wrap; margin-top: .4rem; } .chips span { background: var(--surface); border: 1px solid var(--border); padding: .15rem .6rem; border-radius: 999px; font-size: .82rem; color: var(--primary); font-weight: 600; }
.divider { align-self: center; font-size: .75rem; background: var(--surface-2); color: var(--muted); padding: .15rem .7rem; border-radius: 8px; margin: .3rem 0; }

/* Secciones */
section { padding: 4rem 0; }
.alt { background: var(--surface); border-block: 1px solid var(--border); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .8rem; }
.sub { color: var(--muted); max-width: 40rem; margin: 0 0 2.2rem; font-size: 1.05rem; }
.grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.4rem; }
.alt .card { background: var(--bg); }
.card h3 { margin: .6rem 0 .3rem; font-size: 1.08rem; } .card p { margin: 0; color: var(--muted); }
.icon { width: 44px; height: 44px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; }
.icon svg { width: 24px; height: 24px; }
.pain .card { border-left: 4px solid var(--warn); } .pain .card h3 { margin-top: 0; }
.steps { counter-reset: s; display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { position: relative; padding-top: 3.2rem; } .step::before { counter-increment: s; content: counter(s); position: absolute; top: 0; left: 0; width: 40px; height: 40px; border-radius: 50%; background: var(--primary); color: var(--primary-fg); display: grid; place-items: center; font-weight: 700; }
.step h3 { margin: 0 0 .3rem; } .step p { margin: 0; color: var(--muted); }

/* Vídeo y capturas */
.video { aspect-ratio: 16 / 9; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: grid; place-items: center; text-align: center; color: var(--muted); }
.video video, .video iframe { width: 100%; height: 100%; border: 0; display: block; object-fit: cover; }
.shots { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.shot { margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.shot figcaption { padding: .9rem 1.1rem; color: var(--muted); font-size: .95rem; } .shot figcaption b { color: var(--text); }

/* Precio y preguntas */
.price { text-align: center; max-width: 520px; margin-inline: auto; }
.price .amount { font-size: 3rem; font-weight: 800; letter-spacing: -.03em; line-height: 1.1; margin: .4rem 0; } .price .amount small { font-size: 1rem; font-weight: 500; color: var(--muted); }
.price ul { list-style: none; padding: 0; margin: 1.2rem 0 1.6rem; text-align: left; display: grid; gap: .5rem; } .price li::before { content: "✓"; color: var(--primary); font-weight: 700; margin-right: .6rem; }
details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.2rem; } details + details { margin-top: .7rem; }
summary { font-weight: 600; cursor: pointer; } details p { color: var(--muted); margin: .7rem 0 0; }
.notice { background: var(--warn-soft); color: var(--warn); border-radius: 12px; padding: .8rem 1rem; font-size: .93rem; margin-top: 1rem; }
footer { padding: 2.5rem 0 3rem; color: var(--muted); font-size: .92rem; border-top: 1px solid var(--border); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }