/* Paleta «petróleo oscuro» (darker-mode) — la mild-dark con el fondo más bajo.
   Mismas reglas: las superficies van más oscuras que el fondo, y los campos más
   hundidos todavía. Todo comparte el tono H≈191°. */
:root{
  color-scheme: dark;

  /* fondos generales: petróleo bajo de luz */
  --ground:#0F2429;      /* hsl(191 46% 11%)  página, barra superior, pie */
  --ground-2:#132C32;    /* hsl(191 44% 13.5%)  franjas alternas */

  /* superficies: más oscuras que el fondo */
  --surface:#071B20;     /* tarjetas y paneles */
  --surface-2:#0A2329;   /* parte alta de un panel con degradado */
  --shade:#031114;       /* portada, cierre y campos hundidos */

  --line:#22464F;
  --line-soft:#1C3A40;

  --text:#E6F1F2;
  --muted:#A9C5C9;
  --faint:#86A7AC;

  --brand:#036D80;       /* solo como relleno: botón principal */
  --brand-dark:#025868;
  --accent:#2CC3DE;      /* enlaces, etiquetas, iconos de línea */
  --accent-soft:#0492AC;
  --glow:#9FE3EF;

  --ok:#5BD1A0;
  --warn:#E7B96A;
  --err:#F0A0A2;
  --display:"Newsreader", "Iowan Old Style", Georgia, serif;
  --sans:"IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, Consolas, monospace;
  --wordmark:"Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --sec:clamp(44px,5.4vw,76px);   /* aire vertical de cada sección */
  --wrap:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  margin:0;
  background:var(--ground);
  color:var(--text);
  font:400 17px/1.6 var(--sans);
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:24px}
@media (max-width:520px){.wrap{padding-inline:16px}}

/* ---------- header ---------- */
.top{
  position:sticky;top:env(safe-area-inset-top,0px);z-index:20;
  background:color-mix(in srgb, var(--ground) 90%, transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{width:34px;height:34px;flex:none}
.wordmark{font-family:var(--wordmark);font-size:25px;letter-spacing:-.5px;line-height:1;color:var(--text)}
.wordmark b{font-weight:700}.wordmark span{font-weight:300}
.nav{display:flex;align-items:center;gap:28px}
.nav a{font-size:14px;color:var(--muted);text-decoration:none;transition:color .15s}
.nav a:hover{color:var(--text)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font:500 15px/1 var(--sans);text-decoration:none;
  padding:13px 20px;border-radius:999px;border:1px solid transparent;
  transition:background .15s,border-color .15s,color .15s;cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--accent-soft)}
.btn-primary:hover{background:var(--accent-soft)}
.btn-ghost{color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent-soft)}
.btn-sm{padding:10px 16px;font-size:14px}
@media (max-width:900px){.nav a:not(.btn){display:none}}

/* ---------- type ---------- */
h1,h2,h3{margin:0;text-wrap:balance}
h1,h2{font-family:var(--display);font-weight:400;letter-spacing:-.02em;line-height:1.05}
h1{font-size:clamp(34px,4.6vw,56px)}
h2{font-size:clamp(32px,4.2vw,50px)}
h1 em,h2 em{font-style:italic;color:var(--glow)}
h3{font:600 18px/1.3 var(--sans);letter-spacing:-.005em}
p{margin:0}
.eyebrow{
  font:500 13.5px/1.2 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--accent);
}
.lede{font-size:clamp(17px,1.6vw,20px);color:var(--muted);max-width:56ch;font-weight:300}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}

section{padding-block:var(--sec)}
main > section + section:not(.security):not(.contact){padding-top:0}
.sec-head{display:grid;gap:18px;max-width:760px;margin-bottom:40px}

/* ---------- hero ---------- */
.hero{background:var(--shade);position:relative;padding-block:clamp(36px,4.4vw,60px) clamp(44px,5.4vw,72px);overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-20% -10% auto 35%;height:720px;pointer-events:none;
  background:radial-gradient(closest-side, color-mix(in srgb,var(--brand) 38%,transparent), transparent 72%);
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse at 70% 30%, #000 10%, transparent 65%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 30%, #000 10%, transparent 65%);
}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero-copy{display:grid;gap:26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
@media (max-width:980px){.hero .wrap{grid-template-columns:1fr}}

/* console mock */
.console{
  background:linear-gradient(180deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);border-radius:18px;
  overflow:hidden;
}
.console-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.console-bar .dots{display:flex;gap:6px}
.console-bar .dots i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.tag{font:500 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.console-body{padding:18px;display:grid;gap:14px}
.search{
  display:flex;align-items:center;gap:10px;
  background:var(--shade);border:1px solid var(--line);border-radius:10px;padding:11px 14px;
  font:400 15px var(--mono);color:var(--text);
}
.search svg{flex:none;color:var(--accent)}
.caret{display:inline-block;width:8px;height:17px;background:var(--accent);vertical-align:-3px;margin-left:2px;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.meta-line{display:flex;justify-content:space-between;gap:12px;font:400 12px var(--mono);color:var(--faint)}
.results{border:1px solid var(--line-soft);border-radius:10px;overflow:hidden}
.row{
  display:grid;grid-template-columns:22px 1fr auto;gap:12px;align-items:center;
  padding:11px 14px;border-top:1px solid var(--line-soft);font-size:14px;
}
.row:first-child{border-top:0}
.row.on{background:color-mix(in srgb,var(--brand) 22%,transparent)}
.row .path{font:400 11.5px var(--mono);color:var(--faint);display:block;margin-top:2px;overflow-wrap:anywhere}
.row .name{overflow-wrap:anywhere}
.row .date{font:400 12px var(--mono);color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.fileic{width:18px;height:22px;border-radius:3px;background:var(--line);position:relative}
.fileic::after{content:"";position:absolute;right:0;top:0;width:6px;height:6px;background:var(--glow);border-bottom-left-radius:2px;opacity:.7}
.row.on .fileic{background:var(--accent-soft)}
.gate{
  display:grid;grid-template-columns:1fr auto;gap:14px;align-items:center;
  background:var(--shade);border:1px solid var(--accent-soft);border-radius:12px;padding:14px 16px;
}
.gate h4{margin:0 0 8px;font:500 13px var(--sans);color:var(--muted)}
.otp{display:flex;gap:6px}
.otp span{
  width:30px;height:38px;border-radius:7px;border:1px solid var(--line);
  display:grid;place-items:center;font:500 18px var(--mono);color:var(--text);background:var(--surface);
}
.otp span.cur{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.timer{text-align:right;display:grid;gap:4px}
.timer b{font:500 22px var(--mono);color:var(--glow);font-variant-numeric:tabular-nums}
.timer small{font:400 11px var(--mono);color:var(--faint);letter-spacing:.04em}
.caption{font:400 12px var(--mono);color:var(--faint);margin-top:12px;text-align:right}
@media (max-width:520px){
  .row{grid-template-columns:18px 1fr}
  .row .date{grid-column:2}
  .gate{grid-template-columns:1fr}
  .timer{text-align:left}
  .otp span{width:28px}
}

/* ---------- facts strip ---------- */
.facts{border-block:1px solid var(--line-soft);background:var(--ground-2)}
.facts ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}
.facts li{padding:26px 24px;border-left:1px solid var(--line-soft);display:grid;gap:6px}
.facts li:first-child{border-left:0;padding-left:0}
.facts b{font:500 13px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--glow)}
.facts span{font-size:14px;color:var(--muted)}
@media (max-width:900px){
  .facts ul{grid-template-columns:1fr 1fr}
  .facts li{border-left:0;padding-left:0;border-top:1px solid var(--line-soft)}
  .facts li:nth-child(-n+2){border-top:0}
}
@media (max-width:520px){.facts ul{grid-template-columns:1fr}.facts li:nth-child(2){border-top:1px solid var(--line-soft)}}

/* ---------- problem ---------- */
.problem{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.pains{list-style:none;margin:0;padding:0;display:grid}
.pains li{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:20px 0;border-top:1px solid var(--line)}
.pains li:last-child{border-bottom:1px solid var(--line)}
.pains .before{color:var(--faint);text-decoration:line-through;text-decoration-color:color-mix(in srgb,var(--faint) 55%,transparent)}
.pains .after{color:var(--text)}
.pains .after::before{content:"→ ";color:var(--accent)}
.pains-head{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding-bottom:12px}
/* una sola línea vertical, en el centro del espacio entre columnas: va de la
   etiqueta «hoy» a la última fila, sin cortes entre una fila y otra */
.pains-cols{position:relative}
.pains-cols::before{
  content:"";position:absolute;top:0;bottom:0;left:calc(50% - .5px);
  width:1px;background:var(--line);pointer-events:none;
}
@media (max-width:900px){.problem{grid-template-columns:1fr;gap:40px}}
@media (max-width:520px){
  .pains li,.pains-head{grid-template-columns:1fr;gap:6px}
  .pains-head{display:none}
  .pains-cols::before{display:none}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;counter-reset:s;border-top:1px solid var(--line)}
.step{padding:32px 28px 8px 0;display:grid;gap:14px;align-content:start;position:relative}
.step + .step{padding-left:28px;border-left:1px solid var(--line)}
.step .n{font:400 56px/1 var(--display);color:var(--accent);font-style:italic}
.step p{color:var(--muted);font-size:15.5px}
.step ul{margin:4px 0 0;padding:0;list-style:none;display:grid;gap:8px;font-size:14px;color:var(--muted)}
.step ul li{padding-left:18px;position:relative}
.step ul li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:1px;background:var(--accent)}
.key{display:inline-block;margin-top:6px;font:400 12.5px var(--mono);color:var(--glow);background:var(--shade);border:1px solid var(--line);border-radius:6px;padding:6px 10px;overflow-wrap:anywhere}
@media (max-width:900px){
  .steps{grid-template-columns:1fr}
  .step,.step + .step{padding:28px 0;border-left:0;border-top:1px solid var(--line)}
  .step:first-child{border-top:0}
}

/* ---------- features ---------- */
.security{background:linear-gradient(180deg,var(--ground),var(--ground-2) 30%,var(--ground-2))}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.feat{background:var(--surface);padding:30px 28px;display:grid;gap:12px;align-content:start}
.feat p{color:var(--muted);font-size:15px}
.feat .ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:color-mix(in srgb,var(--brand) 30%,transparent);color:var(--glow)}
.feat h3{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.chip{font:500 10.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;padding:5px 8px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.chip.opt{border-color:color-mix(in srgb,var(--warn) 40%,transparent);color:var(--warn)}
@media (max-width:900px){.feat-grid{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.feat-grid{grid-template-columns:1fr}}

/* ---------- SAT case ---------- */
.case{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.memo{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;display:grid;gap:22px;
}
.memo-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font:400 12px var(--mono);color:var(--faint);letter-spacing:.04em}
.tl{list-style:none;margin:0;padding:0;display:grid;gap:0;position:relative}
.tl li{display:grid;grid-template-columns:78px 1fr;gap:16px;padding:12px 0;position:relative}
.tl li::before{content:"";position:absolute;left:92px;top:20px;width:9px;height:9px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent)}
.tl li::after{content:"";position:absolute;left:96px;top:30px;bottom:-10px;width:1px;background:var(--line)}
.tl li:last-child::after{display:none}
.tl time{font:500 13px var(--mono);color:var(--glow);padding-top:2px;font-variant-numeric:tabular-nums}
.tl div{padding-left:28px;font-size:15px}
.tl div small{display:block;color:var(--faint);font-size:13px}
.retention{display:grid;gap:10px}
.retention .bar{display:grid;grid-template-columns:repeat(6,1fr);gap:4px}
.retention .bar i{height:10px;border-radius:3px;background:var(--brand)}
.retention .bar i:last-child{background:var(--line)}
.retention .yrs{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;font:400 11px var(--mono);color:var(--faint);font-variant-numeric:tabular-nums}
.retention p{font-size:13px;color:var(--muted)}
.case-copy{display:grid;gap:22px}
.case-copy .compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:8px}
.compare div{background:var(--surface);padding:18px 20px;display:grid;gap:4px}
.compare b{font:400 30px/1.1 var(--display)}
.compare div:last-child b{color:var(--glow);font-style:italic}
.compare span{font-size:13px;color:var(--muted)}
@media (max-width:900px){.case{grid-template-columns:1fr;gap:40px}.case-copy{order:-1}}

/* ---------- sectors ---------- */
.sectors{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.sector{padding:26px 24px 26px 0;border-bottom:1px solid var(--line);display:grid;gap:8px;align-content:start}
.sector:not(:nth-child(3n+1)){padding-left:24px;border-left:1px solid var(--line)}
.sector h3{font:400 26px/1.15 var(--display);letter-spacing:-.01em}
.sector p{font:400 13px/1.6 var(--mono);color:var(--muted)}
@media (max-width:900px){
  .sectors{grid-template-columns:1fr 1fr}
  .sector,.sector:not(:nth-child(3n+1)){padding:24px 20px 24px 0;border-left:0}
  .sector:nth-child(2n){padding-left:20px;border-left:1px solid var(--line)}
}
@media (max-width:560px){
  .sectors{grid-template-columns:1fr}
  .sector:nth-child(2n){padding-left:0;border-left:0}
}

/* ---------- migration ---------- */
.migrate{
  display:grid;grid-template-columns:1fr 1.1fr;gap:56px;align-items:center;
  background:radial-gradient(120% 140% at 0% 0%, color-mix(in srgb,var(--brand) 32%,var(--surface)) 0%, var(--surface) 55%);
  border:1px solid var(--line);border-radius:22px;padding:clamp(28px,5vw,56px);
}
.flow{display:grid;grid-template-columns:1fr auto 1fr;gap:14px;align-items:center}
.node{border:1px solid var(--line);border-radius:12px;padding:18px;background:var(--shade);display:grid;gap:6px}
.node.to{border-color:var(--accent-soft)}
.node b{font:500 15px var(--sans)}
.node span{font:400 12px/1.5 var(--mono);color:var(--muted)}
.arrow{color:var(--accent);font:400 26px var(--display)}
.mig-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px}
.mig-list li{display:grid;grid-template-columns:22px 1fr;gap:10px;font-size:15px;color:var(--muted)}
.mig-list li svg{color:var(--accent);margin-top:4px}
@media (max-width:900px){.migrate{grid-template-columns:1fr}}
@media (max-width:520px){.flow{grid-template-columns:1fr}.arrow{transform:rotate(90deg);justify-self:center}}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font:500 17px/1.4 var(--sans);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font:300 26px var(--sans);color:var(--accent);transition:transform .2s;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq details p{padding:0 40px 24px 0;color:var(--muted);max-width:62ch}
@media (max-width:900px){.faq-wrap{grid-template-columns:1fr;gap:32px}}

/* ---------- contact ---------- */
.contact{text-align:left;background:var(--shade)}
.contact-box{
  display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:end;
  border-top:1px solid var(--line);padding-top:56px;
}
.contact-box h2{font-size:clamp(38px,5.4vw,68px)}
.contact-actions{display:grid;gap:14px;justify-items:start}
.placeholder{
  font:400 12px var(--mono);color:var(--warn);
  border:1px dashed #E7B96A66;border-radius:8px;padding:8px 12px;
}
@media (max-width:900px){.contact-box{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line-soft);padding-block:36px 48px}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center}
footer small{font:400 12px var(--mono);color:var(--faint);letter-spacing:.04em}
.tagline{font:600 11px var(--wordmark);letter-spacing:.32em;color:var(--glow);text-transform:uppercase}

/* ---------- motion ---------- */
@media (prefers-reduced-motion:no-preference){
  .console{animation:rise .9s cubic-bezier(.2,.7,.2,1) both .1s}
  .results .row{animation:fadein .5s ease both}
  .results .row:nth-child(2){animation-delay:.15s}
  .results .row:nth-child(3){animation-delay:.3s}
  .gate{animation:fadein .6s ease both .5s}
}
@keyframes rise{from{transform:translateY(14px)}to{transform:none}}
@keyframes fadein{from{opacity:.35}to{opacity:1}}
@media (prefers-reduced-motion:reduce){.caret{animation:none}html{scroll-behavior:auto}}

/* ---------- contact page ---------- */
.contact-page{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.contact-page .sec-head{margin-bottom:0}
.contact-notes{list-style:none;margin:28px 0 0;padding:0;display:grid;gap:14px;font-size:15px;color:var(--muted)}
.contact-notes li{display:grid;grid-template-columns:22px 1fr;gap:10px}
.contact-notes svg{color:var(--accent);margin-top:5px}
.form{
  background:var(--surface);border:1px solid var(--line);border-radius:18px;
  padding:clamp(22px,4vw,36px);display:grid;gap:22px;
}
.field{display:grid;gap:8px}
.field label{font:500 13px var(--sans);color:var(--muted)}
.req{color:var(--accent)}
.field input,.field textarea,.field select{
  width:100%;font:400 16px/1.5 var(--sans);color:var(--text);
  background:var(--shade);border:1px solid var(--line);border-radius:10px;padding:12px 14px;
  transition:border-color .15s,box-shadow .15s;
}
.field textarea{min-height:170px;resize:vertical}
.field select{
  appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:40px;
  background-image:linear-gradient(45deg,transparent 50%,var(--accent) 50%),linear-gradient(135deg,var(--accent) 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% + 2px),calc(100% - 14px) calc(50% + 2px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.field select option{background:var(--surface);color:var(--text)}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent);
}
.field[data-invalid] input,.field[data-invalid] textarea,.field[data-invalid] select{border-color:var(--err)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:620px){.field-row{grid-template-columns:1fr}}
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.captcha-control{display:flex;align-items:center;gap:12px}
.captcha-control #captcha-question{
  font:500 18px var(--mono);color:var(--glow);white-space:nowrap;
  background:var(--shade);border:1px solid var(--line);border-radius:10px;padding:12px 16px;
  font-variant-numeric:tabular-nums;user-select:none;
}
.captcha-control input{width:96px;text-align:center;font-family:var(--mono);font-variant-numeric:tabular-nums}
.captcha-help{font-size:13px;color:var(--faint)}
.field .err{font-size:13px;color:var(--err)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.form-foot small{font-size:13px;color:var(--faint)}
.btn[disabled]{opacity:.6;cursor:progress}
.status{
  border-radius:10px;padding:12px 14px;font-size:14px;
  border:1px solid var(--line);background:var(--shade);color:var(--muted);
}
.status.ok{border-color:color-mix(in srgb,var(--ok) 45%,transparent);color:var(--ok)}
.status.warn{border-color:color-mix(in srgb,var(--warn) 45%,transparent);color:var(--warn)}
@media (max-width:900px){.contact-page{grid-template-columns:1fr;gap:40px}}