/* ============================================================
   Gavin Sourcing — tema corporativo
   Referencia: sistemas de diseño de sitios oficiales (Shopify,
   Stripe): fondo blanco/gris neutro, verde bosque profundo,
   Inter, esquinas pequeñas, líneas finas, retícula estricta.
   ============================================================ */

:root{
  --ink:#131313;
  --ink-2:#5B6165;
  --ink-3:#8A9095;
  --green:#004C3F;
  --green-hover:#00614F;
  --green-soft:#E9F2EE;
  --bg:#FFFFFF;
  --bg-2:#F6F6F7;
  --line:#E4E4E7;
  --footer:#0E1211;
  --radius:8px;
  --radius-lg:12px;
  --container:1120px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
[id]{scroll-margin-top:88px}

.skip{position:absolute;left:-999px;top:8px;z-index:200;background:var(--ink);color:#fff;padding:8px 14px;border-radius:6px}
.skip:focus{left:8px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.nav{position:relative;display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.02rem;color:var(--ink);letter-spacing:-.01em}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--green);color:#fff;display:flex;align-items:center;justify-content:center}
.brand-mark svg{width:17px;height:17px}
.nav-links{display:flex;align-items:center;gap:28px;font-weight:500;font-size:.925rem}
.nav-links a:not(.btn){color:var(--ink-2);transition:color .15s}
.nav-links a:not(.btn):hover{color:var(--ink)}
.lang-switch a{border:1px solid var(--line);border-radius:6px;padding:6px 11px;font-size:.8rem;font-weight:600;background:#fff;color:var(--ink)}
.lang-switch a:hover{border-color:var(--ink-3)}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:8px;width:40px;height:40px;align-items:center;justify-content:center;color:var(--ink);cursor:pointer}
.nav-toggle svg{width:19px;height:19px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;border-radius:8px;padding:12px 22px;font-size:.95rem;transition:background .15s,border-color .15s,color .15s;border:1px solid transparent;cursor:pointer}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-hover)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--ink)}
.btn-outline{border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline:hover{border-color:#fff}
.btn-sm{padding:8px 16px;font-size:.875rem}

/* ---------- Hero ---------- */
.hero{position:relative;padding:84px 0 88px;background:#fff}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--green);margin-bottom:20px}
h1{font-size:clamp(2.3rem,4.8vw,3.5rem);line-height:1.06;letter-spacing:-.03em;color:var(--ink);font-weight:700}
.lead{margin-top:20px;font-size:1.1rem;color:var(--ink-2);max-width:33rem}
.hero-cta{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px}
.hero-points{margin-top:28px;color:var(--ink-2);font-size:.925rem;font-weight:500}

/* Panel de seguimiento (mock) */
.hero-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px rgba(16,24,40,.07);
  max-width:430px;margin-left:auto;width:100%;
}
.panel-head{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;border-bottom:1px solid var(--line)}
.panel-title{font-weight:600;font-size:.9rem;color:var(--ink)}
.panel-badge{font-size:.75rem;font-weight:600;color:var(--green);background:var(--green-soft);padding:4px 10px;border-radius:999px;white-space:nowrap}
.panel-steps{padding:12px 22px}
.panel-steps li{position:relative;display:flex;align-items:center;gap:12px;padding:11px 0;font-size:.9rem;color:var(--ink)}
.panel-steps li::before{content:"";position:absolute;left:4px;top:-14px;bottom:-14px;width:1px;background:var(--line)}
.panel-steps li:first-child::before{top:18px}
.panel-steps li:last-child::before{bottom:calc(100% - 18px)}
.panel-steps .dot{width:9px;height:9px;border-radius:50%;background:var(--green);flex:none;position:relative;z-index:1}
.panel-steps .when{margin-left:auto;color:var(--ink-3);font-size:.78rem;white-space:nowrap}
.panel-steps li.current{font-weight:600}
.panel-steps li.current .dot{background:#fff;border:2px solid var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.panel-foot{display:flex;gap:32px;padding:14px 22px;border-top:1px solid var(--line);background:#FAFAFA;border-radius:0 0 var(--radius-lg) var(--radius-lg)}
.panel-foot .k{display:block;font-size:.72rem;color:var(--ink-3);font-weight:500}
.panel-foot b{font-size:.92rem;font-weight:600;color:var(--ink)}

/* ---------- Sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--bg-2)}
.section-head{max-width:640px;margin:0 0 48px;border-top:1px solid var(--line);padding-top:40px}
.section.alt .section-head{border-top-color:#DDDDDF}
.kicker{display:block;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--green);margin-bottom:12px}
h2{font-size:clamp(1.6rem,2.8vw,2.1rem);line-height:1.15;letter-spacing:-.02em;color:var(--ink);font-weight:700}
.section-head .sub{margin-top:14px;color:var(--ink-2);font-size:1rem}

.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px;transition:border-color .15s}
.card:hover{border-color:var(--ink-3)}
.icon-wrap{width:40px;height:40px;border-radius:8px;background:var(--green-soft);color:var(--green);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.icon-wrap svg{width:20px;height:20px}
.card h3{font-size:1rem;color:var(--ink);margin-bottom:6px;font-weight:600;letter-spacing:-.01em}
.card p{color:var(--ink-2);font-size:.925rem}

/* ---------- Categories ---------- */
.cat-grid{display:flex;flex-wrap:wrap;gap:10px;max-width:900px}
.cat-chip{display:flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 16px;font-weight:500;color:var(--ink);font-size:.9rem;transition:border-color .15s}
.cat-chip:hover{border-color:var(--green)}
.cat-chip svg{width:17px;height:17px;stroke:var(--green);flex:none}
.cat-note{margin-top:24px;color:var(--ink-2);font-size:.925rem}

/* ---------- Steps (claro, editorial) ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:28px}
.step{border-top:1px solid var(--line);padding-top:22px}
.step .num{font-size:.82rem;font-weight:700;color:var(--green);letter-spacing:.08em}
.step .num::before{content:"0"}
.step h3{color:var(--ink);margin:10px 0 6px;font-size:1rem;font-weight:600;letter-spacing:-.01em}
.step p{color:var(--ink-2);font-size:.925rem}

/* ---------- Why 1688 ---------- */
.why-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.check-list li{display:flex;gap:11px;align-items:flex-start;margin-top:14px;color:var(--ink);font-size:.975rem}
.check-list svg{width:18px;height:18px;stroke:var(--green);flex:none;margin-top:4px}
.why-grid .btn{margin-top:28px}
.compare{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.compare-row{display:grid;grid-template-columns:.8fr 1.2fr 1fr;padding:14px 20px;border-top:1px solid var(--line);font-size:.9rem;gap:8px;align-items:center}
.compare-row>span:first-child{color:var(--ink-3);font-weight:500}
.compare-row.head{background:var(--green);color:#fff;border-top:0;font-weight:600;font-size:.85rem}
.compare-row.head>span:first-child{color:rgba(255,255,255,.6)}
.compare-row .hi{color:var(--green);font-weight:600}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;max-width:920px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px}
.price-card h3{color:var(--ink);font-size:1.05rem;margin-bottom:6px;font-weight:600}
.price-card>.sub{color:var(--ink-2);font-size:.925rem;margin-bottom:20px}
.price-big{font-size:2.5rem;font-weight:700;color:var(--ink);letter-spacing:-.03em;line-height:1.1}
.price-big small{font-size:1rem;font-weight:500;color:var(--ink-2);letter-spacing:0}
.badge{display:block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);margin-bottom:16px}
.quote-row{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:.925rem;color:var(--ink-2)}
.quote-row b{color:var(--ink);font-weight:600;white-space:nowrap}
.quote-row.total{border-bottom:0;font-size:1rem;color:var(--ink);font-weight:600}
.quote-note{margin-top:12px;font-size:.8rem;color:var(--ink-3)}

/* ---------- FAQ ---------- */
.faq{max-width:760px}
.faq-item{border:0;border-top:1px solid var(--line);border-radius:0;background:transparent;margin:0;padding:0 0}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;font-weight:600;color:var(--ink);cursor:pointer;list-style:none;font-size:.975rem;letter-spacing:-.01em}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.35rem;font-weight:500;color:var(--green);line-height:1;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 0 20px;color:var(--ink-2);font-size:.925rem;max-width:42rem}

/* ---------- Contact band ---------- */
.band{background:var(--green);color:#fff}
.band .kicker{color:rgba(255,255,255,.65)}
.band h2{color:#fff}
.contact-inner{max-width:640px;margin:0 auto;text-align:left}
.contact-inner .lead{margin-top:14px;color:rgba(255,255,255,.75)}
.contact-cta{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.band .btn-primary{background:#fff;color:var(--green)}
.band .btn-primary:hover{background:#E9F2EE}
.band .btn-outline{border-color:rgba(255,255,255,.4)}
.band .btn-outline:hover{border-color:#fff}

/* ---------- Contact + quote form ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-copy .lead{margin-top:14px}
.contact-list{margin-top:24px}
.contact-list li{position:relative;padding:11px 0 11px 26px;border-bottom:1px solid #DDDDDF;color:var(--ink-2);font-size:.95rem}
.contact-list li::before{content:"";position:absolute;left:2px;top:19px;width:7px;height:7px;border-radius:50%;background:var(--green)}
.contact-copy .hero-cta{margin-top:28px}
.quote-form{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;box-shadow:0 1px 2px rgba(16,24,40,.04)}
.quote-form h3{font-size:1.1rem;margin-bottom:20px;letter-spacing:-.01em;font-weight:600;color:var(--ink)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.8rem;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:6px;padding:10px 12px;font:inherit;font-size:.925rem;color:var(--ink);background:#fff;transition:border-color .15s,box-shadow .15s}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.field textarea{min-height:110px;resize:vertical}
.field .err{display:none;color:#B42318;font-size:.78rem;margin-top:5px}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#B42318}
.field.invalid .err{display:block}
.btn-block{width:100%;justify-content:center}
.form-status{margin-top:14px;padding:10px 12px;border-radius:6px;font-size:.85rem;display:none}
.form-status.ok{display:block;background:var(--green-soft);color:var(--green);font-weight:600}
.form-note{margin-top:12px;font-size:.78rem;color:var(--ink-3)}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer);color:#9CA3AF;padding:56px 0 28px;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.site-footer h4{color:#fff;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px}
.site-footer a{transition:color .15s}
.site-footer a:hover{color:#fff}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand p{max-width:26rem;color:#9CA3AF}
.site-footer li{margin-top:10px}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:24px;color:#6B7280;font-size:.82rem}

/* ---------- Language splash (root) ---------- */
.splash{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:48px 24px;background:#fff}
.splash .brand{justify-content:center;font-size:1.2rem;margin-bottom:32px}
.splash h1{font-size:clamp(1.9rem,4vw,2.6rem);max-width:46rem}
.splash .lead{margin:16px auto 0}
.lang-cards{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:48px}
.lang-card{width:290px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;text-align:left;transition:border-color .15s}
.lang-card:hover{border-color:var(--green)}
.lang-card .tag{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--green)}
.lang-card h2{margin:8px 0 8px;font-size:1.25rem}
.lang-card p{color:var(--ink-2);font-size:.925rem}
.lang-card .arrow{display:inline-block;margin-top:20px;color:var(--green);font-weight:600}

/* ---------- Reveal on scroll (only when JS is available) ---------- */
html.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
html.js .reveal.visible{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .hero{padding:56px 0 64px}
  .hero-grid,.why-grid{grid-template-columns:1fr;gap:44px}
  .hero-panel{margin:0 auto;max-width:480px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0}
}
@media (max-width:860px){
  .nav-toggle{display:flex}
  .nav-links{
    position:absolute;top:100%;left:16px;right:16px;flex-direction:column;align-items:stretch;
    background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;gap:2px;
    box-shadow:0 12px 32px rgba(16,24,40,.1);display:none;
  }
  .nav-links.open{display:flex}
  .nav-links li{width:100%}
  .nav-links a:not(.btn){display:block;padding:10px 12px;border-radius:6px;color:var(--ink)}
  .nav-links a:not(.btn):hover{background:var(--bg-2)}
  .lang-switch{order:5}
  .nav-links .btn{justify-content:center;margin-top:8px}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head{margin-bottom:36px;padding-top:32px}
  .compare-row{font-size:.84rem;padding:12px 14px}
  .panel-foot{gap:20px}
}