:root {
  --orange: #ea580c;
  --orange-600: #c2410c;
  --orange-50: #fff7ed;
  --orange-100: #ffedd5;
  --orange-200: #fed7aa;
  --ink: #18181b;
  --ink-2: #52525b;
  --ink-3: #71717a;
  --line: #e4e4e7;
  --bg: #f7f7f8;
  --card: #ffffff;
  --ok: #15803d;
  --ok-bg: #f0fdf4;
  --err: #b91c1c;
  --err-bg: #fef2f2;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(24, 24, 27, .04), 0 8px 24px -12px rgba(24, 24, 27, .12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* ── Hero ───────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, #1c1917 0%, #292524 60%, #431407 100%);
  color: #fafaf9;
  padding: 48px 0 40px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  font-weight: 700;
  color: var(--orange-200);
  margin: 0 0 10px;
}
.hero h1 { font-size: clamp(26px, 4vw, 38px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.02em; }
.sub { font-size: 16px; color: #e7e5e4; margin: 0 0 22px; max-width: 62ch; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.hint { font-size: 13px; color: #d6d3d1; }

.btn {
  display: inline-block;
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background .12s ease;
  min-height: 42px;
}
.btn:hover { background: var(--orange-600); }
.btn:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.btn:disabled { opacity: .6; cursor: default; }
.btn--send { background: var(--orange); }

/* ── TOC ────────────────────────────────────────────── */
.toc {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 18px 0 6px;
  position: sticky;
  top: 0;
  background: linear-gradient(var(--bg) 70%, transparent);
  z-index: 5;
}
.toc-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 12px;
  text-decoration: none;
}
.toc-link:hover { color: var(--orange-600); border-color: var(--orange-200); background: var(--orange-50); }

/* ── Áreas y cards ──────────────────────────────────── */
.area-title {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--orange-600);
  margin: 30px 0 12px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 20px 16px;
  margin: 14px 0;
  scroll-margin-top: 64px;
}
.card-head { display: flex; align-items: baseline; gap: 12px; }
.num {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 14px;
  color: var(--orange-600);
  background: var(--orange-50);
  border: 1px solid var(--orange-200);
  border-radius: 999px;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  align-self: flex-start;
}
.card-title { font-size: 19px; margin: 0; letter-spacing: -.01em; }
.detalle { margin: 10px 0 0; color: var(--ink-2); font-size: 15px; }

.how {
  margin: 14px 0 0;
  background: var(--orange-50);
  border: 1px solid var(--orange-200);
  border-radius: 10px;
  padding: 12px 14px;
}
.how-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--orange-600);
  margin-bottom: 4px;
}
.how-text { margin: 0; font-size: 15px; color: #3f3f46; }

/* ── Comentario ─────────────────────────────────────── */
.comment-zone { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 14px; }
.comment-title { font-size: 13px; font-weight: 700; color: var(--ink-3); text-transform: uppercase; letter-spacing: .08em; margin: 0 0 10px; }
.form-row { display: grid; grid-template-columns: 200px 1fr; gap: 12px; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field--grow { min-width: 0; }
.field-label { font-size: 13px; font-weight: 600; color: var(--ink-2); }
.input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: #fff;
  min-height: 42px;
}
.input:focus-visible { outline: 2px solid var(--orange); outline-offset: 1px; border-color: var(--orange); }
.textarea { resize: vertical; min-height: 76px; }
.form-actions { display: flex; align-items: center; gap: 12px; margin-top: 12px; flex-wrap: wrap; }
.status { font-size: 14px; color: var(--ink-3); }
.status.ok { color: var(--ok); font-weight: 600; }
.status.err { color: var(--err); font-weight: 600; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* ── Footer ─────────────────────────────────────────── */
.foot { padding: 30px 20px 50px; color: var(--ink-3); font-size: 14px; }

/* ── Mobile ─────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 34px 0 28px; }
  .form-row { grid-template-columns: 1fr; }
  .card { padding: 16px 14px 14px; }
  .card-title { font-size: 17px; }
  .toc { gap: 6px; }
}