/* Recursos Da Vinci · sistema visual común
   Azul eléctrico sobre azul casi negro, el mismo de davincicodigo.com.
   Inter para el texto, Inter Tight para títulos y JetBrains Mono para cifras y etiquetas. */
:root{
  --bg:#05080f;
  --bg-2:#08101f;
  --panel:#0b1324;
  --panel-2:#0f1a30;
  --line:#1a2742;
  --line-2:#243457;
  --text:#eef3ff;
  --soft:rgba(238,243,255,.82);
  --muted:#8e9cbc;
  --accent:#2f80ff;
  --accent-2:#5b9dff;
  --accent-ink:#0a1a38;
  --glow:rgba(47,128,255,.35);
  --warn:#ffb4a8;
  --radius:20px;
  --font:"Inter",Arial,sans-serif;
  --display:"Inter Tight","Inter",Arial,sans-serif;
  --mono:"JetBrains Mono",Consolas,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--bg);-webkit-text-size-adjust:100%}
body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text);font:400 17px/1.6 var(--font);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overflow-x:hidden}
::selection{background:var(--accent);color:#fff}
img{max-width:100%;display:block}
a{color:var(--accent-2)}
h1,h2,h3{margin:0;font-family:var(--display);letter-spacing:-.012em;text-wrap:balance}
p{margin:0;text-wrap:pretty}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}

/* Fondo: brillo azul arriba, cuadrícula fina que se desvanece y grano */
.atmo{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.atmo::before{content:"";position:absolute;inset:-20% -10% auto;height:70vh;background:radial-gradient(60% 60% at 50% 0%,rgba(47,128,255,.22),transparent 70%)}
.atmo::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(91,157,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(91,157,255,.06) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(80% 60% at 50% 0%,#000 30%,transparent 75%);mask-image:radial-gradient(80% 60% at 50% 0%,#000 30%,transparent 75%)}
.grain{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* Estructura */
.shell{width:100%;max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:680px;margin:0 auto}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:18px 0;white-space:nowrap;font:500 12px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.topbar b{color:var(--text);font-weight:600}
@media(max-width:480px){.topbar .marca2{display:none}}
.topbar .tag{display:inline-flex;align-items:center;gap:8px}
.topbar .tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}

/* Tipografía */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 12px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent-2)}
.eyebrow.line::before{content:"";width:24px;height:1px;background:currentColor}
.h1{font-size:clamp(2.15rem,6.4vw,3.6rem);line-height:1.04;font-weight:700}
.h2{font-size:clamp(1.45rem,4.4vw,2rem);line-height:1.15;font-weight:650}
.h3{font-size:1.15rem;line-height:1.3;font-weight:650;letter-spacing:-.005em}
.lead{font-size:clamp(1.05rem,2.6vw,1.2rem);line-height:1.55;color:var(--soft)}
.soft{color:var(--soft)}
.muted{color:var(--muted);font-size:15px}
.mono{font-family:var(--mono)}
.grad{background:linear-gradient(100deg,#fff 10%,var(--accent-2) 60%,#8fbcff);-webkit-background-clip:text;background-clip:text;color:transparent}

/* Botones */
.btn{appearance:none;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:0 28px;border-radius:14px;font:600 17px/1.2 var(--font);color:#fff;text-decoration:none;background:linear-gradient(180deg,#3d8bff,#2370ef);box-shadow:0 0 0 1px rgba(255,255,255,.08) inset,0 10px 30px -10px var(--glow),0 0 40px -12px var(--glow);transition:transform .12s ease,box-shadow .2s ease,filter .2s ease}
.btn:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(255,255,255,.12) inset,0 14px 34px -10px var(--glow),0 0 60px -10px var(--glow)}
.btn:active{transform:translateY(1px) scale(.995)}
.btn svg{width:20px;height:20px;flex:none}
.btn.block{width:100%}
.btn.ghost{background:transparent;box-shadow:0 0 0 1px var(--line-2) inset;color:var(--soft);font-weight:500}
.btn.ghost:hover{box-shadow:0 0 0 1px var(--accent) inset;color:#fff}
.btn[disabled]{opacity:.6;cursor:wait}
.link{appearance:none;background:none;border:0;padding:8px 0;cursor:pointer;color:var(--muted);font:500 15px var(--font);text-decoration:underline;text-underline-offset:4px}
.link:hover{color:var(--text)}

/* Tarjetas */
.card{position:relative;background:linear-gradient(180deg,rgba(15,26,48,.85),rgba(11,19,36,.85));border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px}
.card.glow{border-color:rgba(47,128,255,.45);box-shadow:0 0 0 1px rgba(47,128,255,.12) inset,0 30px 80px -40px var(--glow)}
.card.hl{background:linear-gradient(180deg,rgba(47,128,255,.16),rgba(47,128,255,.06));border-color:rgba(47,128,255,.5)}
.chip{display:inline-flex;align-items:center;gap:8px;min-height:30px;padding:4px 12px;border:1px solid var(--line-2);border-radius:99px;font-size:13.5px;color:var(--soft);background:rgba(11,19,36,.6)}
.chips{display:flex;flex-wrap:wrap;gap:8px}

/* Formulario */
.form{display:flex;flex-direction:column;gap:14px}
.f{display:flex;flex-direction:column;gap:7px;font-size:15px}
.f>span{color:var(--soft)}
.f em{font-style:normal;color:var(--muted)}
.inp{font:500 17px var(--font);color:var(--text);background:rgba(5,8,15,.8);border:1px solid var(--line-2);border-radius:12px;min-height:54px;padding:10px 14px;width:100%;min-width:0;transition:border-color .15s,box-shadow .15s}
.inp::placeholder{color:#55627f}
.inp:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(47,128,255,.2)}
select.inp{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none' stroke='%238e9cbc' stroke-width='1.8'%3E%3Cpath d='M6 8l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:18px;padding-right:38px}
select.inp option{background:var(--panel)}
.phone{display:grid;grid-template-columns:118px 1fr;gap:8px}
.consent{display:flex;gap:12px;align-items:flex-start;font-size:12.5px;line-height:1.5;color:var(--muted)}
.consent input{margin-top:2px;width:20px;height:20px;accent-color:var(--accent);flex:none}
.consent a{color:var(--accent-2)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.msg{font-size:14.5px;min-height:1.2em}
.msg.err{color:var(--warn)}

/* Firma de Miguel */
.byline{display:flex;gap:14px;align-items:center}
.byline img{width:52px;height:52px;border-radius:50%;object-fit:cover;border:1px solid var(--line-2);flex:none}
.byline b{display:block;font-weight:600}
.byline span{font-size:14px;color:var(--muted)}

/* Pie */
.foot{margin-top:72px;padding:28px 0 40px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px;font-size:13px;line-height:1.55;color:var(--muted)}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.foot a{color:var(--soft);text-decoration:none}
.foot a:hover{color:#fff;text-decoration:underline}
.foot sup,.note-ref{font-size:.75em}

/* Movimiento */
.rise{animation:rise .6s cubic-bezier(.2,.7,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}.d4{animation-delay:.24s}.d5{animation-delay:.3s}.d6{animation-delay:.36s}.d7{animation-delay:.42s}.d8{animation-delay:.48s}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}}