/* DobleCorchea — portada comercial y académica */
body.landing {
  min-height: 100dvh; display: flex; flex-direction: column; overflow-x: hidden;
  background:
    radial-gradient(1000px 560px at 90% -10%, rgba(230, 25, 126, .17), transparent 60%),
    radial-gradient(800px 520px at -15% 30%, rgba(247, 148, 29, .10), transparent 60%),
    var(--bg);
}
.landing main { flex: 1; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--orange); margin: 0 0 10px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* navegación */
.site-nav {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 18px;
  padding: 12px max(16px, calc((100% - 1160px) / 2)); background: rgba(30, 30, 32, .82); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.site-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 15px; }
.site-brand img { border-radius: 10px; }
.site-links { display: flex; gap: 4px; margin-left: auto; }
.site-links a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 13.5px; padding: 8px 10px; border-radius: 8px; }
.site-links a:hover { color: var(--text); background: var(--panel); }
.site-cta { display: flex; gap: 8px; }

/* portada */
.hero {
  width: min(1160px, 100%); margin: 0 auto; padding: 56px 16px 48px;
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center;
}
.hero h1 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.06; letter-spacing: -.02em; margin: 0 0 18px; font-weight: 800; }
.hero .lead { max-width: 58ch; font-size: 16.5px; line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.hero-proof { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; max-width: 560px; }
.hero-proof li { border-left: 2px solid var(--magenta); padding: 2px 0 2px 12px; }
.hero-proof b { display: block; font-size: 22px; font-weight: 800; }
.hero-proof span { color: var(--muted); font-size: 12.5px; }
.hero-side { display: grid; gap: 0; }
.hero-photo { position: relative; margin: 0; border-radius: 22px; overflow: hidden; aspect-ratio: 900 / 620; box-shadow: 0 24px 60px rgba(0, 0, 0, .45); border: 1px solid rgba(255, 255, 255, .08); }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(20, 20, 22, .75)); pointer-events: none; }
.live-badge { position: absolute; top: 14px; left: 14px; z-index: 1; display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; border-radius: 99px; background: rgba(20, 20, 22, .72); backdrop-filter: blur(6px); font-size: 12px; font-weight: 700; }
.live-badge i { width: 8px; height: 8px; border-radius: 50%; background: #ff4d5e; box-shadow: 0 0 0 0 rgba(255, 77, 94, .7); animation: livePulse 1.6s infinite; }
@keyframes livePulse { 70% { box-shadow: 0 0 0 8px rgba(255, 77, 94, 0); } 100% { box-shadow: 0 0 0 0 rgba(255, 77, 94, 0); } }
.photo-chip { position: absolute; left: 16px; bottom: 52px; z-index: 1; display: grid; font-size: 13px; line-height: 1.3; }
.photo-chip span { color: rgba(255, 255, 255, .8); font-size: 12px; }
.hero-side .hero-login { margin: -36px 14px 0; position: relative; z-index: 2; }
.hero-login h2 { margin-bottom: 4px; }
.hero-login .muted { margin: 0 0 16px; }

/* bandas */
.band { width: min(1160px, 100%); margin: 0 auto; padding: 64px 16px; }
.band.alt { position: relative; }
.band.alt::before { content: ""; position: absolute; inset: 0 calc(50% - 50vw); background: rgba(255, 255, 255, .025); border-block: 1px solid rgba(255, 255, 255, .05); z-index: -1; }
.section-head { max-width: 760px; margin-bottom: 32px; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); line-height: 1.15; margin: 0 0 12px; letter-spacing: -.01em; }
.section-head .lead { max-width: 70ch; margin: 0; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; counter-reset: s; }
.steps li { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 20px; overflow: hidden; }
.step-img { display: block; width: calc(100% + 40px); max-width: none; margin: -20px -20px 0; aspect-ratio: 14 / 9; height: auto; object-fit: cover; }
.steps .step-n { margin-top: -17px; position: relative; box-shadow: 0 0 0 4px var(--panel); }
.inline-cta { margin-top: 20px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; padding: 18px 22px; border-radius: 16px; background: var(--grad-soft); border: 1px solid rgba(230, 25, 126, .35); }
.inline-cta p { margin: 0; font-size: 14.5px; max-width: 70ch; }
.step-n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--grad); color: #19191b; font-weight: 800; margin-bottom: 12px; }
.steps h3 { font-size: 15.5px; margin: 0 0 6px; }
.steps p { color: var(--muted); font-size: 13.5px; margin: 0; line-height: 1.5; }

.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature-grid article { padding: 22px; border-radius: 16px; background: var(--panel); border: 1px solid var(--line); }
.feature-grid article > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--grad-soft); border: 1px solid rgba(230, 25, 126, .35); color: var(--yellow); margin-bottom: 12px; }
.feature-grid h3 { font-size: 15.5px; margin: 0 0 6px; }
.feature-grid p { color: var(--muted); font-size: 13.5px; margin: 0; line-height: 1.5; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.col-card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 26px; overflow: hidden; }
.col-img { display: block; width: calc(100% + 52px); max-width: none; margin: -26px -26px 22px; aspect-ratio: 15 / 8; height: auto; object-fit: cover; }
.col-card h3 { font-size: 20px; margin: 0 0 14px; }
.checks { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 10px; }
.checks li { position: relative; padding-left: 26px; font-size: 14px; line-height: 1.45; }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 18px; height: 18px; border-radius: 50%; background: rgba(62, 207, 142, .18); color: #7ee2b3; font-size: 11px; font-weight: 800; display: grid; place-items: center; }

/* planes */
.landing .plans-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.landing .plan-card { display: flex; flex-direction: column; padding: 22px; }
.landing .plan-card .btn { margin-top: auto; }
.landing .plan-desc { margin-bottom: 16px; }
.plan-card.popular { border-color: rgba(230, 25, 126, .6); box-shadow: 0 16px 40px rgba(230, 25, 126, .12); }
.plan-flag { position: absolute; top: 14px; right: 14px; font-size: 10.5px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; background: var(--grad); color: #19191b; padding: 3px 8px; border-radius: 99px; }
.plan-price { flex-wrap: wrap; }
.price-local { display: block; width: 100%; order: 3; color: var(--muted); font-size: 12.5px; font-weight: 600; }
.plan-unit { margin: -4px 0 8px; font-size: 12px; color: var(--yellow); font-weight: 600; }
.landing .plans-note { margin-top: 16px; }

/* preguntas */
.faq { display: grid; gap: 10px; max-width: 860px; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0 18px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 700; font-size: 15px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--orange); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq p { margin: 0 0 16px; color: var(--muted); font-size: 14px; line-height: 1.55; }

.cta-band { width: min(1160px, calc(100% - 32px)); margin: 24px auto 64px; text-align: center; padding: 48px 20px; border-radius: 24px; background: var(--grad-soft); border: 1px solid rgba(230, 25, 126, .35); }
.cta-band h2 { font-size: clamp(22px, 3vw, 32px); margin: 0 0 8px; }
.cta-band p { color: var(--text); opacity: .85; margin: 0 0 22px; }

.cta-photo { position: relative; overflow: hidden; text-align: left; padding: 56px clamp(20px, 5vw, 56px); background:
  linear-gradient(90deg, rgba(20, 20, 22, .94) 0%, rgba(20, 20, 22, .82) 45%, rgba(20, 20, 22, .25) 100%),
  url("https://images.unsplash.com/photo-1758524944186-cf2016869381?auto=format&fit=crop&w=1400&h=560&q=65") center 35% / cover no-repeat; }
.cta-photo .cta-copy { max-width: 520px; }
.cta-photo .hero-actions { margin: 0; }

.site-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding: 24px max(16px, calc((100% - 1160px) / 2)); border-top: 1px solid var(--line); font-size: 13px; }
.credits { flex-basis: 100%; margin: 4px 0 0; padding-top: 14px; border-top: 1px solid rgba(255, 255, 255, .06); text-align: center; color: var(--muted); font-size: 12.5px; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 32px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-links { display: none; }
  .site-cta { margin-left: auto; }
  .hero-side { max-width: 560px; width: 100%; margin: 0 auto; }
}
@media (max-width: 640px) {
  .steps, .feature-grid, .two-col { grid-template-columns: 1fr; }
  .hero-proof { grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
  .hero-proof b { font-size: 18px; }
  .band { padding: 44px 16px; }
  .site-brand span { display: none; }
  .hero-side .hero-login { margin: -28px 8px 0; }
  .cta-photo { background:
    linear-gradient(180deg, rgba(20, 20, 22, .55) 0%, rgba(20, 20, 22, .92) 60%),
    url("https://images.unsplash.com/photo-1758524944186-cf2016869381?auto=format&fit=crop&w=800&h=700&q=60") center top / cover no-repeat; padding-top: 140px; }
  .inline-cta .btn { width: 100%; justify-content: center; }
}