/* SOLDADURA Y CALIDAD — hoja de estilos principal */

:root{
  --carbon:#1C1F22;
  --carbon-soft:#2A2E32;
  --green:#4DA84D;
  --green-dark:#3C8A3C;
  --gray:#757778;
  --paper:#F1F2EF;
  --white:#FFFFFF;
  --rule:#D6D8D3;
  --rule-dark:#3A3E42;

  --f-display:"Archivo",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --f-text:"Source Serif 4",Georgia,serif;

  --wrap:1140px;
  --gut:clamp(20px,5vw,56px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:hidden}
body{overflow-x:hidden}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}
body{
  margin:0;background:var(--paper);color:var(--carbon);
  font-family:var(--f-text);font-size:18px;line-height:1.65;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--green);outline-offset:3px}

h1,h2,h3,h4,.d{font-family:var(--f-display);font-weight:700;letter-spacing:-.02em;line-height:1.08;margin:0}
h1{font-size:clamp(34px,5.4vw,62px)}
h2{font-size:clamp(27px,3.4vw,40px)}
h3{font-size:clamp(19px,2vw,23px);letter-spacing:-.01em}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--gut)}
.prose{max-width:66ch}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;z-index:99;background:var(--green);color:#fff;padding:10px 16px;font-family:var(--f-display)}

/* ---------- CABECERA ---------- */
.top{background:var(--carbon);color:#EDEEEC}
.top a{text-decoration:none}
.bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 0;max-width:var(--wrap);margin:0 auto;padding-inline:var(--gut)}
.brand{display:flex;align-items:center;gap:13px;font-family:var(--f-display);font-weight:700;font-size:16px;letter-spacing:.01em;line-height:1.15}
.brand svg{flex:none}
.brand span{display:block;font-weight:400;font-size:11.5px;color:#9BA09C;letter-spacing:.06em}
.nav{display:flex;align-items:center;gap:26px;font-family:var(--f-display);font-weight:500;font-size:14.5px}
.nav a{padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover{border-bottom-color:var(--green)}
.nav a[aria-current]{border-bottom-color:var(--green)}
.tel{font-family:var(--f-display);font-weight:600;font-size:14.5px;background:var(--green);color:#0F1A0F;padding:9px 15px}
.tel:hover{background:#5FBF5F}
.burger{display:none;background:none;border:1px solid var(--rule-dark);color:#EDEEEC;font-family:var(--f-display);font-size:14px;padding:8px 13px;cursor:pointer}
@media (max-width:900px){
  .nav{display:none;flex-direction:column;align-items:flex-start;gap:0;width:100%;padding:8px 0 20px}
  .nav.open{display:flex}
  .nav a{width:100%;padding:11px 0;border-bottom:1px solid var(--rule-dark)}
  .bar{flex-wrap:wrap}
  .burger{display:block}
  .tel{margin-left:auto}
}

/* ---------- HÉROE ---------- */
.hero{background:var(--carbon);color:#EDEEEC;padding-bottom:clamp(40px,6vw,72px)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,5vw,64px);align-items:center;padding-top:clamp(34px,5vw,56px)}
.hero h1{color:#fff;padding-left:22px;border-left:4px solid var(--green)}
.hero .lede{margin-top:24px;padding-left:26px;max-width:52ch;color:#C3C7C4;font-size:clamp(17px,1.6vw,20px)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;padding-left:26px}
.figure{position:relative}
.figure figcaption{font-family:var(--f-display);font-size:12px;color:#7E837F;margin-top:12px;line-height:1.5}
@media (max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .figure{max-width:460px;margin-top:34px}
}

.btn{display:inline-block;font-family:var(--f-display);font-weight:600;font-size:15.5px;padding:13px 22px;text-decoration:none;border:2px solid transparent;transition:background .15s,color .15s}
.btn-primary{background:var(--green);color:#0F1A0F}
.btn-primary:hover{background:#5FBF5F}
.btn-ghost{border-color:#4B5054;color:#EDEEEC}
.btn-ghost:hover{border-color:var(--green);color:#fff}
.btn-dark{background:var(--carbon);color:#fff}
.btn-dark:hover{background:var(--carbon-soft)}

/* ---------- FRANJA DE NORMAS ---------- */
.norms{border-top:1px solid var(--rule-dark);background:var(--carbon)}
.norms ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(6,1fr);width:100%}
.norms li{padding:20px 14px;border-right:1px solid var(--rule-dark);font-family:var(--f-display);font-size:13.5px;line-height:1.35;color:#C3C7C4}
.norms li:last-child{border-right:0}
.norms b{display:block;color:var(--green);font-size:15px;font-weight:700;margin-bottom:3px}
@media (max-width:900px){
  .norms ul{grid-template-columns:repeat(2,1fr)}
  .norms li{border-bottom:1px solid var(--rule-dark)}
  .norms li:nth-last-child(-n+2){border-bottom:0}
  .norms li:nth-child(2n){border-right:0}}

/* ---------- SECCIONES ---------- */
.sec{padding:clamp(52px,7vw,92px) 0}
.sec-white{background:var(--white)}
.sec-carbon{background:var(--carbon);color:#D9DCD9}
.sec-carbon h2{color:#fff}
.head{max-width:60ch;margin-bottom:clamp(30px,4vw,48px)}
.head p{margin-top:16px;color:var(--gray);font-size:17.5px}
.sec-carbon .head p{color:#A8ADA9}

/* filas tipo expediente */
.rows{border-top:1px solid var(--rule)}
.row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.5fr) auto;gap:clamp(16px,3vw,44px);align-items:baseline;padding:26px 0;border-bottom:1px solid var(--rule);text-decoration:none}
a.row:hover{background:#FAFBF9}
a.row:hover h3{color:var(--green-dark)}
.row p{color:var(--gray);font-size:16.5px;margin:0}
.row .go{font-family:var(--f-display);font-weight:600;font-size:14px;color:var(--green-dark);white-space:nowrap}
.row .ref{font-family:var(--f-display);font-size:12.5px;color:var(--gray);margin-top:8px;line-height:1.5}
@media (max-width:780px){
  .row{grid-template-columns:1fr;gap:10px}
  .row .go{margin-top:4px}
}

/* escenarios */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--carbon)}
.case{padding:28px 26px 30px 0;border-right:1px solid var(--rule)}
.case:last-child{border-right:0;padding-right:0}
.case:not(:first-child){padding-left:26px}
.case h3{margin-bottom:12px;max-width:22ch}
.case p{font-size:16.5px;color:#43474A}
.case .mark{display:block;width:26px;height:4px;background:var(--green);margin-bottom:18px}
@media (max-width:820px){
  .cases{grid-template-columns:1fr}
  .case{border-right:0;border-bottom:1px solid var(--rule);padding:26px 0!important}
  .case:last-child{border-bottom:0}
}

/* técnicos */
.people{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(24px,4vw,52px)}
.person{border-top:3px solid var(--green);padding-top:22px}
.person .role{font-family:var(--f-display);font-size:14px;color:var(--gray);margin:6px 0 16px}
.person dl{margin:0;font-size:16px}
.person dt{font-family:var(--f-display);font-size:12.5px;color:var(--gray);margin-top:14px}
.person dd{margin:2px 0 0}
@media (max-width:720px){.people{grid-template-columns:1fr}}

/* independencia */
.claim{font-family:var(--f-display);font-weight:700;font-size:clamp(24px,3.2vw,36px);line-height:1.22;letter-spacing:-.02em;color:#fff;max-width:24ch}
.claim-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:start}
@media (max-width:820px){.claim-grid{grid-template-columns:1fr}}

/* cobertura */
.zones{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid var(--rule);margin-top:8px}
.zone{padding:18px 26px 18px 0;border-right:1px solid var(--rule);font-family:var(--f-display);font-size:15px}
.zone:last-child{border-right:0}
.zone small{display:block;font-family:var(--f-text);color:var(--gray);font-size:14.5px;margin-top:3px}

/* ---------- PÁGINA DE SERVICIO ---------- */
.phead{background:var(--carbon);color:#EDEEEC;padding:clamp(34px,5vw,58px) 0 clamp(38px,5vw,62px)}
.crumb{font-family:var(--f-display);font-size:13px;color:#8B908C;margin-bottom:20px}
.crumb a{text-decoration:none;border-bottom:1px solid #4B5054}
.crumb a:hover{color:var(--green);border-bottom-color:var(--green)}
.phead h1{color:#fff;max-width:20ch;padding-left:20px;border-left:4px solid var(--green)}
.phead .lede{margin-top:20px;padding-left:24px;max-width:60ch;color:#C3C7C4}

.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:clamp(30px,5vw,70px);align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}

.blocks{border-top:2px solid var(--carbon)}
.block{padding:26px 0;border-bottom:1px solid var(--rule)}
.block h3{margin-bottom:10px}
.block p{color:#43474A;margin:0}

.aside{background:var(--white);border-top:3px solid var(--green);padding:24px;position:sticky;top:22px}
.aside h4{font-size:13px;font-family:var(--f-display);color:var(--gray);margin-bottom:12px;font-weight:600}
.aside ul{list-style:none;margin:0 0 26px;padding:0;font-size:16px}
.aside li{padding:8px 0 8px 18px;border-bottom:1px solid var(--rule);position:relative}
.aside li:last-child{border-bottom:0}
.aside li::before{content:"";position:absolute;left:0;top:17px;width:7px;height:7px;background:var(--green)}
.aside ul:last-of-type{margin-bottom:0}
@media (max-width:900px){.aside{position:static}}

/* ---------- FAQ ---------- */
.qa{border-top:2px solid var(--carbon);max-width:74ch}
.qa details{border-bottom:1px solid var(--rule)}
.qa summary{font-family:var(--f-display);font-weight:600;font-size:18.5px;padding:20px 34px 20px 0;cursor:pointer;list-style:none;position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:4px;top:17px;font-size:24px;color:var(--green-dark);font-weight:500}
.qa details[open] summary::after{content:"–"}
.qa summary:hover{color:var(--green-dark)}
.qa .a{padding:0 0 22px;color:#43474A;max-width:64ch}

/* ---------- CONTACTO ---------- */
.form{display:grid;gap:16px;max-width:560px}
.field{display:grid;gap:6px}
.field label{font-family:var(--f-display);font-size:13.5px;font-weight:600}
.field input,.field select,.field textarea{
  font-family:var(--f-text);font-size:17px;padding:11px 13px;
  border:1px solid var(--rule);background:var(--white);color:var(--carbon);border-radius:0;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);outline:2px solid rgba(77,168,77,.25);outline-offset:0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:620px){.two{grid-template-columns:1fr}}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--gray)}
.consent input{width:auto;margin-top:4px}
.direct{border-top:2px solid var(--carbon)}
.direct div{padding:18px 0;border-bottom:1px solid var(--rule)}
.direct dt{font-family:var(--f-display);font-size:12.5px;color:var(--gray)}
.direct dd{margin:4px 0 0;font-family:var(--f-display);font-size:19px;font-weight:600}
.direct a{text-decoration:none;border-bottom:2px solid var(--green)}
.direct a:hover{color:var(--green-dark)}

/* ---------- CTA FINAL ---------- */
.endcta{background:var(--carbon);color:#C3C7C4}
.endcta h2{color:#fff;max-width:18ch}
.endcta .in{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(24px,5vw,60px);align-items:center;padding:clamp(44px,6vw,72px) 0}
.endcta p{margin-top:16px;max-width:44ch}
.endcta .acts{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:820px){.endcta .in{grid-template-columns:1fr}}

/* ---------- PIE ---------- */
.foot{background:#15181A;color:#8B908C;font-size:14.5px;padding:44px 0 34px}
.foot a{text-decoration:none}
.foot a:hover{color:var(--green)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.foot h5{font-family:var(--f-display);font-size:12.5px;color:#C3C7C4;margin:0 0 12px;font-weight:600}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{padding:4px 0}
.foot .legal{margin-top:34px;padding-top:20px;border-top:1px solid #262A2D;display:flex;flex-wrap:wrap;gap:20px;font-size:13px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr;gap:26px}}

/* documentos legales */
.doc{max-width:72ch}
.doc h2{margin-top:42px;font-size:clamp(22px,2.6vw,28px)}
.doc h3{margin-top:26px}
.doc p,.doc li{color:#3A3E41}
.doc ul{padding-left:22px}
.doc li{margin-bottom:8px}
.todo{background:#FFF6D9;border-left:4px solid #E0B33C;padding:14px 18px;font-size:15.5px;font-family:var(--f-display);color:#5C4A12;margin:18px 0}

.note{font-size:15px;color:var(--gray);margin-top:14px}

/* franja de normas centrada */
.norms li{text-align:center;padding-right:14px}

/* preparaciones de soldadura */
.preps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--carbon)}
.prep{margin:0;padding:26px 26px 28px 0;border-bottom:1px solid var(--rule);border-right:1px solid var(--rule)}
.prep:nth-child(3n){border-right:0;padding-right:0}
.prep:nth-child(3n+2),.prep:nth-child(3n){padding-left:26px}
.prep:nth-last-child(-n+3){border-bottom:0}
.prep svg{width:100%;max-width:250px;height:auto}
.prep figcaption{margin-top:16px;font-size:15.5px;color:#43474A;max-width:34ch}
.prep b{display:block;font-family:var(--f-display);font-size:17px;color:var(--carbon);margin-bottom:5px}
@media (max-width:900px){
  .preps{grid-template-columns:repeat(2,1fr)}
  .prep:nth-child(3n){border-right:1px solid var(--rule);padding-right:26px}
  .prep:nth-child(3n+2),.prep:nth-child(3n){padding-left:0}
  .prep:nth-child(2n){border-right:0;padding-right:0;padding-left:26px}
  .prep:nth-last-child(-n+3){border-bottom:1px solid var(--rule)}
  .prep:nth-last-child(-n+2){border-bottom:0}
}
@media (max-width:560px){
  .preps{grid-template-columns:1fr}
  .prep{border-right:0!important;padding:24px 0!important;border-bottom:1px solid var(--rule)!important}
  .prep:last-child{border-bottom:0!important}
}

/* logotipo */
.brand{gap:16px;align-items:center}
.brand img{width:auto;height:34px}
.brand span{font-family:var(--f-display);font-weight:400;font-size:11.5px;color:#9BA09C;letter-spacing:.06em;
  padding-left:16px;border-left:1px solid #3A3E42;max-width:15ch;line-height:1.35}
@media (max-width:1080px){.brand span{display:none}}
@media (max-width:900px){.brand img{height:26px}}
.foot-logo{width:auto;height:26px;margin-bottom:16px;opacity:.9}

/* ---------- LOGO, IDIOMAS Y CABECERA ---------- */
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{width:auto;height:34px}
.brand span{font-family:var(--f-display);font-weight:400;font-size:11.5px;color:#9BA09C;letter-spacing:.05em}
.utils{display:flex;align-items:center;gap:16px}
.langs{display:flex;align-items:center;gap:2px;font-family:var(--f-display);font-size:13px;font-weight:600}
.langs a,.langs span{padding:5px 8px;text-decoration:none;color:#8B908C;border:1px solid transparent}
.langs a:hover{color:#fff;border-color:#3A3E42}
.langs [aria-current]{color:#0F1A0F;background:var(--green)}
.burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:40px;padding:0}
.burger span{display:block;width:20px;height:2px;background:#EDEEEC;margin:0 auto}
.foot-logo{height:26px;width:auto;margin-bottom:14px}
@media (max-width:980px){
  .bar{flex-wrap:wrap;gap:14px}
  .burger{display:flex}
  .utils{margin-left:auto}
  .nav{display:none;order:9;flex-direction:column;align-items:flex-start;gap:0;width:100%;padding:4px 0 16px}
  .nav.open{display:flex}
  .nav a{width:100%;padding:12px 0;border-bottom:1px solid var(--rule-dark)}
}
@media (max-width:520px){
  .brand img{height:24px}
  .tel{font-size:13px;padding:8px 11px}
  .utils{gap:10px}
}