/* Ruta Motor Chile - hoja de estilos
   Sin fuentes externas ni librerias: carga rapida y sin llamadas a terceros. */
:root{
  --asphalt:#0A2250; --asphalt-2:#183B85;
  --sign:#1E4FD6; --sign-dark:#1739A0;
  --paint:#FFFFFF; --accent:#1E4FD6;
  --fog:#EDF3FF; --white:#fff;
  --ink:#12203A; --muted:#44546E; --line:#C6D4E8; --warn:#A63D2A;
  --sans:"Segoe UI","Helvetica Neue",Arial,system-ui,sans-serif;
  --serif:Georgia,"Times New Roman",serif;
  --wrap:1120px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:#fff;color:var(--ink);font:18px/1.65 var(--serif)}
img,svg{max-width:100%}
a{color:var(--sign-dark);text-underline-offset:.18em}
a:hover{color:var(--asphalt)}
:focus-visible{outline:3px solid var(--asphalt);outline-offset:3px}
.road :focus-visible,.site-footer :focus-visible,.cookie :focus-visible{outline-color:var(--paint)}
.skip{position:absolute;left:-999px;top:0;background:var(--asphalt);color:#fff;padding:10px 16px;font:600 15px var(--sans);z-index:100}
.skip:focus{left:8px;top:8px}
.wrap{width:min(100% - 40px,var(--wrap));margin-inline:auto}

/* Cabecera */
.site-header{background:#fff;border-bottom:4px solid var(--sign)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font:800 1.25rem/1 var(--sans);letter-spacing:-.02em;color:var(--asphalt);text-decoration:none}
.brand svg{width:38px;height:38px;flex:none}
.nav-toggle{display:none;align-items:center;padding:9px 14px;font:700 .95rem var(--sans);background:#fff;color:var(--asphalt);border:2px solid var(--asphalt);border-radius:6px;cursor:pointer}
#site-nav ul{display:flex;flex-wrap:wrap;gap:4px 22px;list-style:none;margin:0;padding:0}
#site-nav a{display:block;padding:8px 0;font:600 .95rem var(--sans);color:var(--ink);text-decoration:none;border-bottom:3px solid transparent}
#site-nav a:hover{border-color:var(--line)}
#site-nav a[aria-current="page"]{border-color:var(--accent)}
@media (max-width:820px){
  .js .nav-toggle{display:inline-flex}
  .js #site-nav{display:none;width:100%}
  .js #site-nav.open{display:block}
  #site-nav ul{flex-direction:column;gap:0}
  #site-nav a{padding:12px 0;border-bottom:1px solid var(--line)}
  #site-nav a[aria-current="page"]{border-bottom-color:var(--accent)}
}

/* Botones y senales */
.btn{display:inline-block;padding:13px 22px;border-radius:6px;font:700 1rem/1.2 var(--sans);text-decoration:none;border:2px solid var(--sign);cursor:pointer}
.btn-primary{background:var(--sign);color:#fff}
.btn-primary:hover{background:var(--sign-dark);color:#fff}
.btn-ghost{background:transparent;color:var(--sign-dark)}
.btn-ghost:hover{background:#fff;color:var(--sign-dark)}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.sign{display:inline-block;background:var(--sign);color:#fff;border-radius:6px;padding:5px 12px;font:600 .88rem/1.3 var(--sans);box-shadow:inset 0 0 0 2px var(--sign),inset 0 0 0 3.5px rgba(255,255,255,.85)}

/* Portada */
.hero{padding:56px 0 44px}
.hero h1{margin:0 0 18px;color:var(--asphalt);font:800 clamp(2.2rem,6vw,3.8rem)/1.02 var(--sans);letter-spacing:-.035em;max-width:16ch}
.lede{font-size:1.2rem;max-width:58ch;color:var(--muted);margin:0 0 26px}

/* Ano al volante: la ruta */
.road{background:var(--asphalt);color:#E8EEF1;padding:44px 0 40px}
.road h2{margin:0 0 8px;font:800 1.7rem/1.15 var(--sans);letter-spacing:-.02em;color:#fff}
.road-intro{margin:0;max-width:62ch;color:#C3D3EA}
.year{list-style:none;margin:150px 0 0;padding:0;display:grid;grid-template-columns:repeat(12,1fr);position:relative}
.year::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:repeating-linear-gradient(90deg,var(--paint) 0 28px,transparent 28px 52px)}
.year li{position:relative;padding-top:18px;font:600 .9rem var(--sans);color:#C3D3EA}
.hito{position:absolute;left:0;bottom:calc(100% + 18px);width:250px;padding:10px 14px;font:600 .9rem/1.35 var(--sans);color:#fff;background:var(--sign);border-radius:6px;box-shadow:inset 0 0 0 2px var(--sign),inset 0 0 0 3.5px rgba(255,255,255,.85)}
.hito::after{content:"";position:absolute;left:14px;top:100%;height:18px;width:3px;background:var(--paint)}
.road-foot{margin:26px 0 0;max-width:70ch;color:#C3D3EA;font:.98rem/1.55 var(--sans)}
@media (max-width:760px){
  .year{grid-template-columns:1fr;margin-top:26px;padding-left:36px}
  .year::before{left:12px;right:auto;top:0;bottom:0;width:6px;height:auto;background:repeating-linear-gradient(180deg,var(--paint) 0 24px,transparent 24px 44px)}
  .year li{display:none}
  .year li.has-hito{display:grid;grid-template-columns:56px 1fr;gap:12px;align-items:start;padding:10px 0}
  .hito{position:static;width:auto}
  .hito::after{display:none}
}

/* Secciones */
.section{padding:52px 0}
.section h2{margin:0 0 10px;font:800 1.8rem/1.15 var(--sans);letter-spacing:-.02em}
.section .sub{margin:0 0 26px;color:var(--muted);max-width:62ch}
.section.alt{background:#fff;border-block:1px solid var(--line)}
.guide-list{list-style:none;margin:0;padding:0}
.guide-list li{display:grid;grid-template-columns:170px 1fr;gap:6px 24px;padding:20px 0;border-top:1px solid var(--line)}
.guide-list li:last-child{border-bottom:1px solid var(--line)}
.guide-list .sign{align-self:start;justify-self:start}
.guide-list a.title{font:700 1.2rem/1.3 var(--sans);color:var(--ink);text-decoration:none}
.guide-list a.title:hover{text-decoration:underline}
.guide-list p{margin:4px 0 0;color:var(--muted);font-size:1rem}
@media (max-width:640px){.guide-list li{grid-template-columns:1fr}}
.split{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:900px){.split{grid-template-columns:1fr 1fr;align-items:start}}

/* Herramientas */
.tool{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px}
.tool h2,.tool h3{margin:0 0 4px;font:800 1.25rem/1.25 var(--sans)}
.tool .hint{margin:0 0 18px;color:var(--muted);font-size:.98rem}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px 18px}
.field label{display:block;margin-bottom:5px;font:600 .92rem var(--sans)}
.field input,.field select,.field textarea{width:100%;padding:11px 12px;font:1rem var(--sans);border:1.5px solid #5F7396;border-radius:6px;background:#fff;color:var(--ink)}
.field textarea{min-height:150px;resize:vertical}
.field small{display:block;margin-top:4px;color:var(--muted);font:.85rem var(--sans)}
.field.full{grid-column:1/-1}
.check{display:flex;gap:10px;align-items:flex-start;font:.95rem/1.45 var(--sans)}
.check input{margin-top:4px;width:18px;height:18px;flex:none}
.tool-actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
.result{margin-top:20px;padding-top:16px;border-top:2px dashed var(--line)}
.result dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin:0}
.result dt{font:600 .88rem var(--sans);color:var(--muted)}
.result dd{margin:0;font:800 1.5rem/1.2 var(--sans);color:var(--asphalt)}
.result .err{margin:0;color:var(--warn);font:600 1rem var(--sans)}
.tools-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media (min-width:900px){.tools-grid.two{grid-template-columns:1fr 1fr}}

/* Foro */
.forum-row{display:grid;grid-template-columns:1fr auto;gap:8px 24px;padding:20px 0;border-top:1px solid var(--line);align-items:center}
.forum-row:last-child{border-bottom:1px solid var(--line)}
.forum-row h3{margin:0;font:700 1.15rem/1.3 var(--sans)}
.forum-row p{margin:4px 0 0;color:var(--muted);font-size:1rem}
.forum-row .empty{font:.9rem var(--sans);color:var(--muted)}
@media (max-width:640px){.forum-row{grid-template-columns:1fr}}
.thread{padding:18px 20px;margin:0 0 14px;background:#fff;border:1px solid var(--line);border-left:6px solid var(--sign);border-radius:6px}
.thread h3{margin:0 0 4px;font:700 1.1rem/1.3 var(--sans)}
.thread p{margin:0;color:var(--muted);font-size:1rem}
.thread .meta{margin-top:8px;font:.88rem var(--sans);color:var(--muted)}

/* Articulos y paginas de texto */
.band{background:#fff;border-block:1px solid var(--line);padding:40px 0 60px}
.crumbs ol{display:flex;flex-wrap:wrap;list-style:none;padding:0;margin:0 0 20px;font:.9rem var(--sans);color:var(--muted)}
.crumbs li+li::before{content:"/";margin:0 8px;color:#97A4AC}
.crumbs a{color:var(--muted)}
.layout{display:grid;gap:48px;grid-template-columns:minmax(0,1fr)}
@media (min-width:980px){.layout{grid-template-columns:minmax(0,68ch) 290px;justify-content:space-between}}
.prose h1{margin:0 0 12px;font:800 clamp(1.9rem,4.5vw,2.8rem)/1.1 var(--sans);letter-spacing:-.03em}
.byline{margin:0 0 26px;color:var(--muted);font:.95rem var(--sans)}
.prose .intro{font-size:1.18rem;color:#2B3842}
.prose h2{margin:2.2em 0 .5em;font:800 1.55rem/1.2 var(--sans);letter-spacing:-.02em;scroll-margin-top:20px}
.prose h3{margin:1.6em 0 .3em;font:700 1.15rem/1.3 var(--sans)}
.prose p{margin:0 0 1em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.3em}
.prose li{margin:.35em 0}
.table-scroll{overflow-x:auto;margin:1.2em 0}
.prose table{width:100%;min-width:480px;border-collapse:collapse;font:.95rem/1.45 var(--sans)}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left;vertical-align:top}
.prose th{background:var(--fog)}
.note{margin:1.6em 0;padding:14px 18px;background:var(--fog);border-left:6px solid var(--accent);font:.98rem/1.55 var(--sans)}
.side{font-family:var(--sans);font-size:.95rem}
.side .box{border:1px solid var(--line);padding:18px;border-radius:8px;margin-bottom:20px;background:#fff}
.side h2{margin:0 0 8px;font:700 1rem var(--sans)}
.side ol,.side ul{margin:0;padding-left:1.1em}
.side li{margin:.4em 0}
.side p{margin:0;color:var(--muted)}
@media (min-width:980px){.side{position:sticky;top:20px;align-self:start}}
.related{margin-top:2.6em;padding-top:1.2em;border-top:2px dashed var(--line)}
.related h2{margin-top:0}

/* Pie */
.site-footer{background:var(--asphalt);color:#E3ECF9;padding:48px 0 30px;font:.95rem/1.6 var(--sans)}
.site-footer a{color:#fff}
.site-footer h2{margin:0 0 10px;font:700 1rem var(--sans);color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:.3em 0}
.site-footer address{font-style:normal}
.foot-grid{display:grid;gap:30px;grid-template-columns:1fr}
@media (min-width:760px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.3fr}}
.foot-brand{margin:0 0 8px;font:800 1.2rem var(--sans);color:#fff}
.site-footer p{margin:0 0 8px}
.legal-line{margin-top:30px!important;padding-top:18px;border-top:1px solid #3A5A8C;color:#C3D3EA;font-size:.88rem}
.linklike{background:none;border:0;padding:0;font:inherit;color:#fff;text-decoration:underline;cursor:pointer}

/* Cookies */
.cookie{position:fixed;left:0;right:0;bottom:0;z-index:50;background:var(--asphalt);color:#fff;padding:16px 0;box-shadow:0 -2px 0 var(--paint);font:.95rem/1.5 var(--sans)}
.cookie[hidden]{display:none}
.cookie .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between}
.cookie p{margin:0;max-width:70ch}
.cookie a{color:#fff}
.cookie .btn{padding:10px 18px;font-size:.95rem;border-color:#fff}
.cookie .btn-primary{background:#fff;color:var(--asphalt)}
.cookie .btn-primary:hover{background:#DCE8F8;color:var(--asphalt)}
.cookie .btn-ghost{color:#fff}
.cookie .btn-ghost:hover{background:var(--asphalt-2);color:#fff}
.form-msg{margin:14px 0 0;font:600 .98rem var(--sans);color:var(--sign-dark)}

/* Puntos de control (portada) */
.checks-list{list-style:none;margin:28px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.checks-list a{display:block;height:100%;padding:16px 18px;border:2px solid rgba(255,255,255,.55);border-radius:8px;color:#fff;text-decoration:none;background:rgba(255,255,255,.06)}
.checks-list a:hover{background:rgba(255,255,255,.16)}
.checks-list strong{display:block;font:800 1.1rem/1.25 var(--sans)}
.checks-list span{display:block;margin-top:4px;font:.92rem/1.45 var(--sans);color:#D5E1F7}