:root {
  --ink: #0f1c2e;
  --ink-soft: #3a4a60;
  --muted: #5d6b7e;
  --line: #dfe5ec;
  --bg: #ffffff;
  --bg-alt: #f4f7fa;
  --brand: #0b6e78;
  --brand-dark: #08525a;
  --brand-tint: #e3f2f3;
  --navy: #0f2a44;
  --radius: 10px;
  --max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}

img, svg { max-width: 100%; height: auto; }

a { color: var(--brand); }
a:hover { color: var(--brand-dark); }

h1, h2, h3 { line-height: 1.25; color: var(--navy); margin: 0 0 .6em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.85rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; margin: 0 0 1em; }
li { margin-bottom: .35em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; z-index: 10; }

/* Cabecera */
.site-header { border-bottom: 1px solid var(--line); background: #fff; }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); }
.brand svg { width: 34px; height: 34px; flex: none; }
.brand-name { font-weight: 800; font-size: 1.25rem; letter-spacing: .04em; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin: 0; padding: 0; list-style: none; font-size: .97rem; }
.nav li { margin: 0; }
.nav a { color: var(--ink-soft); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--brand); }
.nav a[aria-current="page"] { color: var(--brand); border-bottom-color: var(--brand); }

/* Portada */
.hero { background: linear-gradient(160deg, #0f2a44 0%, #12405a 60%, #0b6e78 100%); color: #fff; padding: 72px 0 64px; }
.hero h1 { color: #fff; max-width: 18em; }
.hero .lead { font-size: 1.2rem; color: #d9e8ef; max-width: 36em; }
.hero .legal { font-size: .95rem; color: #b8cfdb; margin-bottom: 1.4em; letter-spacing: .02em; }

.page-head { background: var(--bg-alt); border-bottom: 1px solid var(--line); padding: 48px 0 36px; }
.page-head p { color: var(--ink-soft); font-size: 1.1rem; max-width: 42em; margin: 0; }

.section { padding: 56px 0; }
.section.alt { background: var(--bg-alt); }
.section > .wrap > p.intro { max-width: 46em; color: var(--ink-soft); }
.prose { max-width: 46em; }
.prose h2 { margin-top: 1.6em; }
.prose h2:first-child { margin-top: 0; }

.btn { display: inline-block; padding: 12px 22px; border-radius: 8px; font-weight: 600; text-decoration: none; background: var(--brand); color: #fff; }
.btn:hover { background: var(--brand-dark); color: #fff; }
.btn.light { background: #fff; color: var(--navy); }
.btn.light:hover { background: var(--brand-tint); color: var(--navy); }
.btn.ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.55); }
.btn.ghost:hover { background: rgba(255,255,255,.1); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin-bottom: .4em; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card .more { font-weight: 600; text-decoration: none; }
.card .more::after { content: " →"; }
.icon { width: 40px; height: 40px; color: var(--brand); margin-bottom: 12px; }

.tag { display: inline-block; font-size: .8rem; font-weight: 600; color: var(--brand-dark); background: var(--brand-tint); padding: 2px 10px; border-radius: 999px; margin-bottom: 10px; }

.flow { margin: 8px 0 0; }
.flow svg { width: 100%; height: auto; display: block; }
.flow .flow-v { display: none; }
@media (max-width: 720px) {
  .flow .flow-h { display: none; }
  .flow .flow-v { display: block; max-width: 300px; margin: 0 auto; }
}
.caption { font-size: .92rem; color: var(--muted); margin-top: 10px; }

.contact-list { list-style: none; padding: 0; }
.contact-list li { padding: 12px 0; border-bottom: 1px solid var(--line); margin: 0; }
.contact-list strong { display: block; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

.cta { background: var(--navy); color: #fff; padding: 48px 0; }
.cta h2 { color: #fff; }
.cta p { color: #cfdde8; max-width: 40em; }

.updated { color: var(--muted); font-size: .95rem; }

/* Pie */
.site-footer { background: #0b1a2b; color: #b9c6d4; font-size: .93rem; padding: 40px 0 28px; }
.site-footer a { color: #e3ecf4; }
.footer-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.site-footer h2 { font-size: 1rem; color: #fff; margin-bottom: .5em; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer .legal-line { border-top: 1px solid #1f3248; margin-top: 24px; padding-top: 18px; }

/* Error */
.notfound { padding: 96px 0; text-align: center; }
.notfound .code { font-size: 4rem; font-weight: 800; color: var(--brand); margin: 0; }
.notfound .actions { justify-content: center; }
.notfound .btn.light { border: 1px solid var(--line); }