:root{--black:#0B0B0F;--white:#F4F2EE;--violet:#7C3AED;--cyan:#16D9C5;--magenta:#F72585;--muted:#9d99a8;--panel:#14131a}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 10%,#25133f 0,transparent 30%),var(--black);color:var(--white);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;min-height:100vh}.shell{width:min(920px,92vw);margin:auto;min-height:100vh;display:flex;flex-direction:column}.site-header{padding:24px 0 16px}.brand-lockup{display:inline-flex;align-items:center;text-decoration:none}.brand-lockup img{display:block;width:170px;height:auto;max-width:52vw;filter:drop-shadow(0 0 18px #7c3aed18)}.progress{height:3px;background:#24212d;margin-top:20px;border-radius:3px;overflow:hidden}.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--violet),var(--cyan));transition:.3s}#app{flex:1;display:grid;align-items:center;padding:30px 0 50px}.card{max-width:760px}.eyebrow{color:var(--cyan);font-size:12px;letter-spacing:.16em;text-transform:uppercase;font-weight:800}.hero{font-size:clamp(40px,7vw,76px);line-height:.98;letter-spacing:-.05em;margin:14px 0 22px}.hero em{font-style:normal;color:var(--violet)}h2{font-size:clamp(28px,4vw,46px);line-height:1.05;letter-spacing:-.03em;margin:12px 0}.lead,.help{color:var(--muted);font-size:17px;line-height:1.6}.help{font-size:14px;margin-top:10px}input,textarea,select{width:100%;margin-top:22px;background:var(--panel);border:1px solid #312d3d;color:var(--white);border-radius:14px;padding:17px 18px;font:inherit;outline:none}textarea{min-height:150px;resize:vertical}input:focus,textarea:focus,select:focus{border-color:var(--violet);box-shadow:0 0 0 3px #7c3aed22}.actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}button{border:0;border-radius:999px;padding:14px 22px;font-weight:800;cursor:pointer}.primary{background:var(--violet);color:white}.secondary{background:#1b1922;color:var(--white)}.ghost{background:transparent;color:var(--muted)}.meta{font-size:12px;color:var(--muted);margin-top:16px}.choice{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.choice button{background:#18161f;color:var(--white);border:1px solid #312d3d}.choice button:hover{border-color:var(--violet)}footer{padding:18px 0 28px;color:#615d6b;font-size:10px;letter-spacing:.15em}@media(max-width:600px){.site-header{padding-top:16px}.brand-lockup img{width:145px}.hero{font-size:48px}.actions button{flex:1}}

/* v1.3 · Cinematic opening */
body.intro-mode .site-header,
body.intro-mode footer{opacity:0;pointer-events:none}
.site-header,footer{transition:opacity .55s ease}
#app.intro-stage{padding:0;display:block}
.opening{
  position:fixed;inset:0;z-index:50;background:
  radial-gradient(circle at 50% 42%,#281447 0,transparent 28%),
  radial-gradient(circle at 78% 12%,#171126 0,transparent 32%),var(--black);
  display:grid;place-items:center;overflow:hidden;
  opacity:1;transition:opacity .8s ease,filter .8s ease
}
.opening.is-leaving{opacity:0;filter:blur(7px);pointer-events:none}
.opening-inner{
  width:min(820px,88vw);text-align:center;display:grid;justify-items:center;
  transform:translateY(8px)
}
.opening-logo{
  width:clamp(190px,32vw,330px);height:auto;opacity:0;
  transform:translateY(16px) scale(.96);
  filter:drop-shadow(0 0 32px #7c3aed26);
  animation:revealLogo .95s cubic-bezier(.2,.8,.2,1) .18s forwards
}
.opening-copy{
  margin-top:34px;opacity:0;transform:translateY(14px);
  animation:revealCopy .8s ease 1.2s forwards
}
.opening-kicker{
  color:var(--cyan);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;font-weight:800;margin-bottom:13px
}
.opening-title{
  font-size:clamp(34px,6vw,64px);line-height:1.02;letter-spacing:-.045em;
  margin:0;color:var(--white);max-width:760px
}
.opening-title em{font-style:normal;color:var(--violet)}
.opening-message{
  max-width:680px;margin:20px auto 0;color:#b6b1c0;
  font-size:clamp(16px,2.1vw,19px);line-height:1.65
}
.opening-message strong{color:var(--white)}
.opening-actions{
  opacity:0;transform:translateY(10px);
  animation:revealCopy .7s ease 2.15s forwards;margin-top:28px
}
.opening-actions button{min-width:190px}
.opening-note{margin-top:14px;color:#716c7b;font-size:12px}
@keyframes revealLogo{to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes revealCopy{to{opacity:1;transform:translateY(0)}}
@media(max-width:600px){
  .opening-logo{width:210px}
  .opening-copy{margin-top:28px}
  .opening-message{font-size:16px;line-height:1.55}
}


/* v1.5 · bienvenida personalizada */
.name-input{
  width:100%;
  box-sizing:border-box;
  margin:22px 0 8px;
  padding:18px 20px;
  border:1px solid rgba(244,242,238,.18);
  border-radius:14px;
  background:rgba(255,255,255,.045);
  color:#F4F2EE;
  font:inherit;
  font-size:1.1rem;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.name-input:focus{
  border-color:#7C3AED;
  box-shadow:0 0 0 3px rgba(124,58,237,.15);
  background:rgba(255,255,255,.06);
}
.name-input.input-error{
  border-color:#F72585;
  box-shadow:0 0 0 3px rgba(247,37,133,.12);
}
.personal-greeting{
  margin:0 0 22px;
  color:#F4F2EE;
  font-size:1.02rem;
  line-height:1.6;
}
.personal-greeting strong{color:#16D9C5}

/* v1.6 · respuestas obligatorias */
textarea.input-error{
  border-color:#F72585 !important;
  box-shadow:0 0 0 3px rgba(247,37,133,.12);
}
.required-warning{
  margin-top:10px;
  color:#F72585;
  font-size:.86rem;
  line-height:1.4;
}


/* v1.7 · refinamiento tipográfico de lectura */
body,
textarea,
input,
button {
  font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.opening-message,
.lead,
.help,
.meta,
.opening-note,
.personal-greeting {
  font-weight: 300;
  letter-spacing: 0.005em;
}

.opening-message {
  line-height: 1.72;
}

.lead,
.help,
.personal-greeting {
  line-height: 1.68;
}

.help,
.meta,
.opening-note {
  opacity: .82;
}

textarea,
.name-input {
  font-weight: 300;
  letter-spacing: 0.003em;
}

.hero,
.opening-title,
.card h2 {
  font-weight: 500;
  letter-spacing: -0.02em;
}

.eyebrow,
.opening-kicker {
  font-weight: 500;
  letter-spacing: .09em;
}

strong {
  font-weight: 500;
}


/* FINAL PREMIUM · FUTURE ALCHEMY */
:root{
  --black:#09090C;
  --white:#F4F2EE;
  --violet:#7C3AED;
  --cyan:#16D9C5;
  --magenta:#F72585;
  --muted:#A9A5B2;
  --line:rgba(244,242,238,.10);
}

body{
  background:
    radial-gradient(circle at 82% 8%,rgba(124,58,237,.16),transparent 29%),
    radial-gradient(circle at 8% 82%,rgba(22,217,197,.035),transparent 26%),
    linear-gradient(180deg,#0A090D 0%,#09090C 100%);
  overflow-x:hidden;
}
body:before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:-1;opacity:.22;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:linear-gradient(to bottom,black,transparent 78%);
}
body:after{
  content:"";position:fixed;right:-90px;top:18vh;width:240px;height:240px;
  border:1px solid rgba(124,58,237,.12);border-radius:50%;pointer-events:none;z-index:-1;
  box-shadow:0 0 90px rgba(124,58,237,.055),inset 0 0 60px rgba(124,58,237,.025)
}

.shell{width:min(1180px,90vw)}
.site-header{
  display:flex;align-items:flex-end;justify-content:space-between;
  padding:30px 0 14px;border-bottom:1px solid rgba(244,242,238,.07)
}
.brand-lockup img{width:158px;opacity:.94}
.progress{
  position:fixed;left:0;top:0;width:100%;height:2px;margin:0;
  background:rgba(255,255,255,.035);border-radius:0;z-index:30
}
.progress i{
  background:linear-gradient(90deg,var(--violet),var(--cyan));
  box-shadow:0 0 18px rgba(22,217,197,.25)
}

#app{padding:64px 0 76px;align-items:center}
.card{
  position:relative;max-width:900px;width:100%;
  padding-left:clamp(0px,7vw,96px);
}
.card:before{
  content:"";position:absolute;left:0;top:4px;width:1px;height:78px;
  background:linear-gradient(to bottom,var(--violet),rgba(124,58,237,0))
}
.card:after{
  content:"";position:absolute;left:-4px;top:0;width:9px;height:9px;border-radius:50%;
  background:var(--violet);box-shadow:0 0 20px rgba(124,58,237,.5)
}

.eyebrow{
  display:flex;align-items:center;gap:12px;color:var(--cyan);
  font-size:10px;letter-spacing:.18em;font-weight:500
}
.eyebrow:before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}

.card h2{
  max-width:860px;font-size:clamp(34px,5.2vw,64px);line-height:1.01;
  letter-spacing:-.038em;margin:18px 0 16px;font-weight:450;
  text-wrap:balance
}
.hero{
  max-width:900px;font-size:clamp(48px,7vw,84px);font-weight:450;
  letter-spacing:-.055em;text-wrap:balance
}
.lead{max-width:720px;font-size:18px;color:#B6B2BE}
.help{
  max-width:700px;margin-top:14px;color:#8F8A98;font-size:13px;
  letter-spacing:.01em
}
.personal-greeting{
  max-width:680px;color:#9F9AA8;font-size:14px;margin-bottom:32px
}
.personal-greeting strong{color:var(--white);font-weight:450}

textarea,.name-input{
  width:min(820px,100%);margin-top:32px;padding:20px 0 17px;
  background:transparent;border:0;border-bottom:1px solid rgba(244,242,238,.17);
  border-radius:0;color:var(--white);font-size:17px;line-height:1.65;
  transition:border-color .25s ease,box-shadow .25s ease
}
textarea{min-height:170px}
textarea::placeholder,.name-input::placeholder{color:#5E5966}
textarea:focus,.name-input:focus{
  border-color:var(--cyan);box-shadow:0 10px 30px -28px rgba(22,217,197,.7)
}

.actions{margin-top:34px;gap:10px}
button{
  position:relative;border-radius:999px;padding:13px 22px;font-size:12px;
  letter-spacing:.04em;font-weight:500;transition:transform .2s ease,background .2s ease,box-shadow .2s ease
}
button:hover{transform:translateY(-1px)}
.primary{
  background:var(--white);color:#0A090D;
  box-shadow:0 8px 28px rgba(0,0,0,.18)
}
.primary:hover{background:#fff;box-shadow:0 10px 34px rgba(124,58,237,.15)}
.secondary{
  background:transparent;color:#A9A5B2;border:1px solid rgba(244,242,238,.12)
}
.secondary:hover{border-color:rgba(244,242,238,.28);color:var(--white)}
.meta{font-size:10px;letter-spacing:.06em;color:#625D6A;margin-top:18px}
footer{
  border-top:1px solid rgba(244,242,238,.055);padding-top:20px;
  color:#514D58
}

/* Premium opening */
.opening{
  background:
    radial-gradient(circle at 50% 39%,rgba(124,58,237,.20),transparent 26%),
    radial-gradient(circle at 80% 10%,rgba(124,58,237,.08),transparent 30%),
    #09090C
}
.opening:before{
  content:"";position:absolute;inset:0;opacity:.26;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);
  background-size:78px 78px;
  mask-image:radial-gradient(circle at center,black,transparent 70%)
}
.opening-inner{width:min(900px,88vw)}
.opening-logo{width:clamp(180px,27vw,285px);filter:drop-shadow(0 0 44px rgba(124,58,237,.13))}
.opening-kicker{font-size:9px;letter-spacing:.25em;color:var(--cyan)}
.opening-title{
  max-width:850px;font-size:clamp(40px,6.2vw,72px);font-weight:450;
  letter-spacing:-.05em;line-height:.99;text-wrap:balance
}
.opening-message{
  max-width:650px;color:#A7A2AF;font-size:clamp(15px,1.7vw,17px);
  line-height:1.78;font-weight:300
}
.opening-message strong{color:#E7E4E8;font-weight:450}
.opening-actions{margin-top:32px}
.opening-actions .primary{min-width:180px}
.opening-note{font-size:10px;letter-spacing:.04em;color:#5E5965}

/* subtle entrance */
.card{animation:premiumIn .48s cubic-bezier(.2,.8,.2,1)}
@keyframes premiumIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}

.required-warning{font-size:11px;letter-spacing:.02em}

@media(max-width:700px){
  .shell{width:min(90vw,620px)}
  .site-header{padding-top:24px}
  #app{padding:46px 0 60px}
  .card{padding-left:22px}
  .card:before{height:54px}
  .card h2{font-size:clamp(31px,9vw,46px);line-height:1.04}
  .hero{font-size:clamp(44px,12vw,62px)}
  textarea{min-height:190px}
  .opening-inner{width:86vw}
  .opening-message{line-height:1.65}
}