html,body{margin:0}img,svg{max-width:100%}[hidden]{display:none!important}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:50;background:var(--surface);padding:8px 12px}

/* Layout: a road alignment read from PK 0+000 down the page. Contour-line hero (volcanic terrain + trazado), then
   service "tramos", situations, process, FAQ, contact. Signage blue as the single accent; marking yellow only on PK ticks. */
:root{
  --bg:#F2F3EF;          /* cal: lime-wash white, slightly cool */
  --surface:#FFFFFF;
  --ink:#171C20;         /* basalto */
  --muted:#5A646B;
  --line:#D5D9D4;
  --accent:#1D4F9B;      /* azul de señal de orientación */
  --accent-ink:#FFFFFF;
  --mark:#E3B505;        /* amarillo de marca vial (solo PK) */
  --contour:#B9C1BC;
  --band:#171C20;        /* franja oscura */
  --band-ink:#EEF0EC;
  --band-muted:#A5AEB3;

  --f-display:"Barlow Condensed","Arial Narrow","Roboto Condensed",sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  --s-1:clamp(2.6rem,6.4vw,5.6rem);
  --s-2:clamp(1.9rem,3.6vw,2.9rem);
  --s-3:clamp(1.3rem,2vw,1.6rem);
  --s-body:1.0625rem;
  --s-small:.875rem;
  --wrap:1180px;
  --radius:4px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#12171A;--surface:#1A2125;--ink:#E9ECE8;--muted:#9AA5AB;--line:#2C363B;
  --accent:#6E9BE6;--accent-ink:#0E1416;--mark:#E8C02A;--contour:#2E3A3F;
  --band:#0B0F11;--band-ink:#E9ECE8;--band-muted:#8E9AA0;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#12171A;--surface:#1A2125;--ink:#E9ECE8;--muted:#9AA5AB;--line:#2C363B;
  --accent:#6E9BE6;--accent-ink:#0E1416;--mark:#E8C02A;--contour:#2E3A3F;
  --band:#0B0F11;--band-ink:#E9ECE8;--band-muted:#8E9AA0;color-scheme:dark}

*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:var(--s-body);line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--bg)}
a{color:inherit}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--f-display);font-weight:600;line-height:1.02;letter-spacing:.005em;text-wrap:balance;margin:0}
h1{font-size:var(--s-1);text-transform:uppercase}
h2{font-size:var(--s-2);text-transform:uppercase}
h3{font-size:var(--s-3);font-weight:600}
p{margin:0}
.pk{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;color:var(--muted);display:inline-flex;align-items:center;gap:.6em;text-transform:uppercase}
.pk::before{content:"";width:22px;height:4px;background:var(--mark);border-radius:1px}
.btn{display:inline-flex;align-items:center;gap:.55em;font-family:var(--f-body);font-weight:600;font-size:1rem;text-decoration:none;padding:.85em 1.3em;border-radius:var(--radius);border:2px solid var(--accent);background:var(--accent);color:var(--accent-ink);cursor:pointer;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--mark);outline-offset:2px}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.mark{position:relative;width:38px;height:38px;flex:none}
.mark b{font-family:var(--f-display);font-weight:700;font-size:1.25rem;position:absolute;left:0;top:-2px;letter-spacing:-.02em}
.mark i{position:absolute;right:0;bottom:0;width:15px;height:15px;background:var(--ink)}
.brand span{display:flex;flex-direction:column;line-height:1.1}
.brand strong{font-family:var(--f-display);font-size:1.25rem;font-weight:600;letter-spacing:.02em}
.brand small{font-size:.75rem;color:var(--muted)}
.nav{display:flex;align-items:center;gap:22px}
.nav a{text-decoration:none;font-size:.93rem;color:var(--muted)}
.nav a:hover{color:var(--ink)}
.nav .btn{color:var(--accent-ink);padding:.6em 1em;font-size:.9rem}
@media (max-width:860px){.nav a:not(.btn){display:none}}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:48px;padding-block:clamp(56px,9vw,112px) clamp(48px,7vw,88px)}
.hero-copy{display:flex;flex-direction:column;gap:24px;min-width:0}
.hero h1 em{font-style:normal;color:var(--accent)}
.lede{font-size:1.15rem;max-width:56ch;color:var(--ink)}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.facts{align-self:end;display:grid;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.fact{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:baseline;padding:16px 18px;border-top:1px solid var(--line)}
.fact:first-child{border-top:0}
.fact strong{font-family:var(--f-display);font-size:2rem;font-weight:600;line-height:1;font-variant-numeric:tabular-nums;min-width:3.2ch}
.fact span{font-size:.92rem;color:var(--muted)}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.facts{align-self:stretch}}

/* sections */
section{padding-block:clamp(64px,9vw,112px)}
.head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:32px;align-items:end;margin-bottom:44px}
.head p{color:var(--muted);max-width:58ch}
.head .stack{display:flex;flex-direction:column;gap:14px}
@media (max-width:860px){.head{grid-template-columns:1fr}}

/* situations */
.sits{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.sit{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;padding:24px 4px;border-bottom:1px solid var(--line);text-decoration:none}
.sit:nth-child(odd){padding-right:28px;border-right:1px solid var(--line)}
.sit:nth-child(even){padding-left:28px}
.sit q{quotes:none;font-family:var(--f-display);font-size:1.45rem;font-weight:500;line-height:1.15}
.sit small{display:block;margin-top:6px;color:var(--muted);font-size:.9rem}
.sit .go{font-family:var(--f-mono);font-size:.78rem;color:var(--accent);white-space:nowrap}
.sit:hover q{color:var(--accent)}
@media (max-width:760px){.sits{grid-template-columns:1fr}.sit:nth-child(odd){padding-right:4px;border-right:0}.sit:nth-child(even){padding-left:4px}}

/* services */
.svc{display:grid;grid-template-columns:minmax(0,.42fr) minmax(0,1fr);gap:40px;padding-block:44px;border-top:1px solid var(--line)}
.svc:first-of-type{border-top:2px solid var(--ink)}
.svc-side{display:flex;flex-direction:column;gap:14px}
.svc-side svg{width:100%;max-width:260px;height:auto;color:var(--ink)}
.svc-body{display:flex;flex-direction:column;gap:18px;min-width:0}
.svc-body > p{max-width:62ch}
.cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.cols h4{margin:0 0 8px;font-size:.78rem;font-family:var(--f-mono);font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.cols ul{margin:0;padding-left:1.1em;display:grid;gap:6px}
.note{font-size:.92rem;color:var(--muted);border-left:3px solid var(--line);padding-left:12px;max-width:64ch}
@media (max-width:860px){.svc{grid-template-columns:1fr;gap:20px}.cols{grid-template-columns:1fr}}

/* band: process */
.band{background:var(--band);color:var(--band-ink)}
.band .pk{color:var(--band-muted)}
.band .head p{color:var(--band-muted)}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;counter-reset:s;border-top:1px solid #ffffff2a}
.steps li{counter-increment:s;padding:26px 22px 8px 0;border-right:1px solid #ffffff1f;display:flex;flex-direction:column;gap:10px;min-width:0}
.steps li + li{padding-left:22px}
.steps li:last-child{border-right:0}
.steps li::before{content:counter(s);font-family:var(--f-display);font-size:3.2rem;line-height:1;font-weight:600;color:var(--mark)}
.steps h3{font-size:1.35rem}
.steps p{color:var(--band-muted);font-size:.97rem}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}.steps li{border-right:0;padding-left:0!important;border-bottom:1px solid #ffffff1f;padding-bottom:22px}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}

/* why */
.why{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.why div{display:flex;flex-direction:column;gap:10px;padding-top:18px;border-top:2px solid var(--ink)}
.why p{color:var(--muted);font-size:.97rem}
@media (max-width:900px){.why{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.why{grid-template-columns:1fr}}

/* faq */
.faq{border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;padding:20px 0;font-family:var(--f-display);font-size:1.35rem;font-weight:500}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--accent);font-size:1.3rem;line-height:1.2}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 22px;color:var(--muted);max-width:70ch}

/* contact */
.contact{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:48px}
.contact-side{display:flex;flex-direction:column;gap:20px}
.mail{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.mail code{font-family:var(--f-mono);font-size:.95rem;user-select:all;overflow-wrap:anywhere}
.mail button{margin-left:auto;font:inherit;font-size:.85rem;background:transparent;border:1px solid var(--line);color:var(--ink);border-radius:var(--radius);padding:.35em .8em;cursor:pointer}
form{display:grid;grid-template-columns:1fr 1fr;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(18px,3vw,32px)}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field.full{grid-column:1/-1}
label{font-size:.85rem;font-weight:500}
label small{font-weight:400;color:var(--muted)}
input,select,textarea{font:inherit;font-size:1rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:.7em .8em;width:100%}
textarea{min-height:130px;resize:vertical}
.form-foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:space-between}
.form-foot p{font-size:.82rem;color:var(--muted);max-width:44ch}
.sent{grid-column:1/-1;font-size:.95rem;border-left:3px solid var(--accent);padding:8px 12px}
@media (max-width:860px){.contact{grid-template-columns:1fr}}
@media (max-width:560px){form{grid-template-columns:1fr}}

footer{border-top:1px solid var(--line);padding-block:32px;font-size:.88rem;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;justify-content:space-between}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
html{scroll-behavior:smooth}
section[id]{scroll-margin-top:72px}

.check{display:flex;flex-direction:row;gap:10px;align-items:flex-start;font-size:.88rem;font-weight:400;color:var(--muted)}
.check input{width:18px;height:18px;margin-top:3px;flex:none}
.check a{color:var(--accent)}
.hp{position:absolute;left:-9999px}
label small{font-weight:400;color:var(--muted)}
.legal{max-width:76ch;display:flex;flex-direction:column;gap:16px}
.legal h1{font-size:clamp(2.2rem,5vw,3.6rem)}
.legal h2{font-size:1.5rem;margin-top:14px}
.legal ul{margin:0;padding-left:1.2em;display:grid;gap:6px}
.todo{background:#E3B50540;padding:0 .3em;border-radius:2px}
footer a{color:inherit}
.nav .btn.ghost{color:var(--ink);background:transparent;border-color:var(--ink)}
/* brand: larger, logo as one block */
.top .wrap{padding-block:14px}
.brand{gap:14px}
.mark{width:56px;height:56px;display:block}
.mark b{font-size:2rem;line-height:1;left:0;top:2px;letter-spacing:-.03em}
.mark i{width:20px;height:20px;right:2px;bottom:4px}
.brand strong{font-size:1.75rem;line-height:1}
.brand small{font-size:.86rem;margin-top:4px}
@media (max-width:560px){
  .mark{width:46px;height:46px}.mark b{font-size:1.65rem}.mark i{width:16px;height:16px;right:1px;bottom:3px}
  .brand strong{font-size:1.5rem}.brand small{font-size:.74rem;max-width:20ch;line-height:1.25}
  .nav .btn{padding:.55em .8em;font-size:.85rem}
}