:root{
  --navy: #0E2A47;
  --navy-2: #17395C;
  --taupe: #8F877B;
  --taupe-light: #C9C2B6;
  --blue: #2E7DD1;
  --ink: #1B2027;
  --ink-soft: #545B64;
  --paper: #FFFFFF;
  --mist: #F4F6F8;
  --line: #E3E7EB;
  --heading: var(--navy);
  --card-bg: #FFFFFF;
  --header-bg: rgba(255,255,255,.94);
  --radius: 6px;
  --maxw: 1140px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
.site-header, .service-card, .course-card, .model-card, .project-card, .price-card,
.deliverables-card, .cert-card, .module-card, .includes-item, input, textarea, .tab{
  transition-property:background-color, border-color, color, box-shadow, transform;
  transition-duration:.2s;
  transition-timing-function:ease;
}
body{
  margin:0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  transition:background .2s ease, color .2s ease;
}
h1,h2,h3,h4{
  font-family:'Sora',sans-serif;
  color:var(--heading);
  margin:0 0 .5em;
  line-height:1.15;
  letter-spacing:-0.01em;
}
p{margin:0 0 1em; color:var(--ink-soft); line-height:1.6;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px;}

h1{font-size:clamp(30px,3.6vw,42px); max-width:20ch;}
.section-head h1{font-size:clamp(26px,3vw,34px); max-width:none;}
.eyebrow{
  font-size:13px;
  font-weight:600;
  color:var(--blue);
  letter-spacing:.02em;
  margin-bottom:.7em;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:13px 24px;
  border-radius:8px;
  font-weight:600;
  font-size:15px;
  letter-spacing:.01em;
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease, transform .12s ease;
  font-family:'Inter',sans-serif;
}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--blue); outline-offset:2px;}
.btn-primary{background:var(--navy); color:#fff; box-shadow:0 1px 2px rgba(14,42,71,.08);}
.btn-primary:hover{background:var(--navy-2); box-shadow:0 6px 16px -4px rgba(14,42,71,.35); transform:translateY(-1px);}
.btn-outline{border-color:var(--navy); color:var(--navy); background:transparent;}
.btn-outline:hover{background:var(--navy); color:#fff; border-color:var(--navy); box-shadow:0 6px 16px -4px rgba(14,42,71,.25); transform:translateY(-1px);}
.btn-ghost{border-color:var(--line); color:var(--navy); background:var(--card-bg);}
.btn-ghost:hover{border-color:var(--blue); color:var(--blue); box-shadow:0 4px 12px -4px rgba(46,125,209,.25);}
.btn-block{display:flex; width:100%; justify-content:center;}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  background:var(--header-bg);
  backdrop-filter:blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease, box-shadow .2s ease;
}
.site-header.scrolled{border-bottom-color:var(--line); box-shadow:0 2px 12px rgba(14,42,71,.05);}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand-mark{height:44px; width:auto; transition:filter .2s ease;}
.main-nav{display:flex; align-items:center; gap:30px;}
.main-nav a{
  font-size:14.5px; font-weight:500; color:var(--ink);
  position:relative; padding:6px 0;
}
.main-nav a:hover{color:var(--blue);}
.main-nav a.active-link{color:var(--blue);}
.header-actions{display:flex; align-items:center; gap:16px;}
.aula-btn{padding:11px 20px; font-size:14px;}
.nav-toggle{
  display:none; flex-direction:column; gap:5px;
  background:none; border:none; cursor:pointer; padding:8px;
}
.nav-toggle span{width:22px; height:2px; background:var(--navy); display:block;}

/* Hero */
.hero{
  padding:76px 0 88px;
  background:
    linear-gradient(180deg, var(--mist) 0%, #fff 100%);
  overflow:hidden;
  position:relative;
}
.hero-inner{
  max-width:760px;
}
.hero h1{
  font-size:clamp(32px, 4vw, 48px);
  max-width:16ch;
}
.hero-lead{font-size:17px; max-width:52ch;}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; margin:28px 0 40px;}
.hero-stats{display:flex; gap:36px; flex-wrap:wrap;}
.hero-stats div{display:flex; flex-direction:column;}
.hero-stats strong{font-family:'Sora',sans-serif; font-size:22px; color:var(--navy);}
.hero-stats span{font-size:13px; color:var(--ink-soft);}

/* Section head */
.section-head{max-width:640px; margin-bottom:44px;}
.section-head h2{font-size:clamp(26px,3vw,34px);}
.section-head p{font-size:16px;}

/* Services */
.services{padding:88px 0; background:var(--paper);}
.service-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
  align-items:stretch;
}
.service-grid.cols-4{grid-template-columns:repeat(4,1fr);}
.service-grid.cols-5{grid-template-columns:repeat(5,1fr);}
.service-grid.cols-1{grid-template-columns:1fr; max-width:380px;}
.service-card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:10px;
  padding:24px 22px 22px;
  display:flex;
  flex-direction:column;
  box-shadow:0 1px 2px rgba(14,42,71,.04);
  transition:box-shadow .18s ease, border-color .18s ease, transform .18s ease;
}
.service-card:hover{
  border-color:var(--blue);
  box-shadow:0 14px 32px -12px rgba(14,42,71,.18);
  transform:translateY(-3px);
}
.service-card h3{
  font-size:15px;
  line-height:1.3;
  min-height:38px;
  margin-bottom:14px;
  padding-bottom:13px;
  border-bottom:1px solid var(--line);
  letter-spacing:-.005em;
}
.service-card ul{
  list-style:none;
  margin:0 0 20px;
  padding:0;
  flex:1;
  display:flex;
  flex-direction:column;
  gap:9px;
}
.service-card ul li{
  position:relative;
  padding-left:15px;
  font-size:12.5px;
  color:var(--ink-soft);
  line-height:1.5;
}
.service-card ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:7px;
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--taupe);
}
.service-btn{
  background:var(--navy);
  color:#fff;
  border-radius:8px;
  font-size:13px;
  padding:11px 16px;
  letter-spacing:.01em;
}
.service-btn:hover{background:var(--blue);}

/* Courses */
.courses{padding:88px 0; background:var(--mist);}
.filter-tabs{display:flex; gap:10px; margin-bottom:32px; flex-wrap:wrap;}
.tab{
  padding:9px 18px; border-radius:100px; border:1.5px solid var(--line);
  background:var(--card-bg); color:var(--ink-soft); font-weight:600; font-size:14px; cursor:pointer;
  transition:background .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease;
}
.tab:focus-visible{outline:2px solid var(--blue); outline-offset:2px;}
.tab.active{background:var(--navy); border-color:var(--navy); color:#fff; box-shadow:0 4px 12px -4px rgba(14,42,71,.4);}
.tab:hover:not(.active){border-color:var(--navy); color:var(--navy);}
.course-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.course-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
  display:flex; flex-direction:column;
  box-shadow:0 1px 2px rgba(14,42,71,.04);
  transition:box-shadow .18s ease, border-color .18s ease, transform .18s ease;
}
.course-card:hover{border-color:var(--blue); box-shadow:0 14px 32px -12px rgba(14,42,71,.18); transform:translateY(-3px);}
.course-thumb{
  aspect-ratio:1/1;
  position:relative;
  display:flex; align-items:flex-end; padding:12px;
}
.thumb-navy{background:linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);}
.thumb-navy-2{background:linear-gradient(135deg, #16324f 0%, #0a1c30 100%);}
.thumb-taupe{background:linear-gradient(135deg, #8F877B 0%, #5c564c 100%);}
.thumb-blue{background:linear-gradient(135deg, var(--blue) 0%, #16324f 100%);}
.course-mode{
  display:inline-flex; align-items:center; gap:6px;
  background:rgba(0,0,0,.35); color:#fff; font-size:12px; font-weight:600;
  padding:5px 10px; border-radius:100px;
}
.dot{width:7px; height:7px; border-radius:50%; display:inline-block;}
.dot-live{background:#ef4444;}
.dot-hybrid{background:#38bdf8;}
.dot-async{background:#a3a3a3;}
.course-body{padding:18px 18px 20px; display:flex; flex-direction:column; gap:8px; flex:1;}
.course-tag{
  align-self:flex-start;
  font-size:11.5px; font-weight:700; color:var(--taupe);
  background:#efece7; padding:4px 9px; border-radius:4px; letter-spacing:.03em;
}
.course-card h3{font-size:16px; margin-bottom:4px; flex:1;}
.course-price{font-size:14px; color:var(--ink-soft); margin-bottom:10px;}
.course-price strong{color:var(--heading); font-size:16px;}
.course-price s{color:#b7bcc2;}
.courses-footnote{font-size:13px; color:var(--ink-soft); margin-top:24px;}

/* About */
.about{padding:88px 0; background:var(--navy); color:#fff;}
.about h2, .about h4{color:#fff;}
.about p{color:#c7d0da;}
.about-copy{max-width:760px;}
.about-grid{display:grid; grid-template-columns:1fr 1fr; gap:28px; margin-top:32px;}
.about-item{
  border-left:2px solid var(--blue);
  padding-left:20px;
}
.about-item h4{font-size:16px; margin-bottom:8px;}
.about-item p{font-size:14.5px; margin-bottom:0;}

/* Certificate */
.certificate{padding:88px 0; background:var(--paper);}
.certificate-inner{
  display:block;
  background:var(--mist); border-radius:10px; padding:52px;
}
.certificate-copy{max-width:560px; margin:0 auto;}
.certificate-form{margin-top:24px;}
.certificate-form label{display:block; font-size:13px; font-weight:600; color:var(--heading); margin-bottom:8px;}
.cert-input-row{display:flex; gap:10px;}
.cert-input-row input{
  flex:1; padding:13px 14px; border-radius:var(--radius); border:1.5px solid var(--line);
  font-size:15px; font-family:'Inter',sans-serif; background:var(--card-bg); color:var(--ink);
}
.cert-input-row input:focus{outline:2px solid var(--blue); outline-offset:1px; border-color:var(--blue);}
.cert-hint{font-size:13px; margin-top:10px; color:var(--ink-soft);}

/* Contact */
.contact{padding:88px 0 100px; background:var(--paper);}
.contact-inner{display:grid; grid-template-columns:1fr 1fr; gap:64px;}
.contact-list{list-style:none; padding:0; margin:24px 0 0; display:flex; flex-direction:column; gap:16px;}
.contact-list li{display:flex; flex-direction:column; gap:2px; font-size:15px;}
.contact-label{font-size:12.5px; font-weight:700; color:var(--taupe); text-transform:uppercase; letter-spacing:.04em;}
.contact-list a{color:var(--heading); font-weight:600;}
.contact-list a:hover{color:var(--blue);}
.contact-note{font-size:12.5px; color:#9aa1a8; margin-top:22px;}
.contact-form{display:flex; flex-direction:column; gap:14px;}
.contact-form label{font-size:13px; font-weight:600; color:var(--heading);}
.contact-form input, .contact-form textarea{
  padding:13px 14px; border-radius:var(--radius); border:1.5px solid var(--line);
  font-size:15px; font-family:'Inter',sans-serif; resize:vertical; background:var(--card-bg); color:var(--ink);
}
.contact-form input:focus, .contact-form textarea:focus{outline:2px solid var(--blue); outline-offset:1px; border-color:var(--blue);}
.contact-form .btn{margin-top:8px;}

/* WhatsApp CTA */
.whatsapp-cta{padding:56px 0 88px; background:var(--paper);}
.whatsapp-link{
  display:flex;
  align-items:center;
  gap:18px;
  max-width:480px;
  margin:0 auto;
  padding:20px 26px;
  background:#25D366;
  border-radius:12px;
  transition:transform .12s ease, box-shadow .12s ease;
  box-shadow:0 6px 20px rgba(37,211,102,.25);
}
.whatsapp-link:hover{transform:translateY(-2px); box-shadow:0 10px 26px rgba(37,211,102,.32);}
.whatsapp-icon{
  flex-shrink:0;
  width:46px; height:46px;
  display:flex; align-items:center; justify-content:center;
}
.whatsapp-icon svg{width:34px; height:34px;}
.whatsapp-text{display:flex; flex-direction:column; gap:3px;}
.whatsapp-text strong{color:#fff; font-family:'Sora',sans-serif; font-size:16.5px;}
.whatsapp-text span{color:rgba(255,255,255,.9); font-size:13.5px; line-height:1.4;}

/* Service detail pages */
.service-detail{padding:64px 0 96px; background:var(--paper);}
.service-detail-head{max-width:680px; margin-bottom:40px;}
.service-detail-head h1{margin-bottom:14px;}
.service-detail-head p{font-size:17px;}
.includes-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
  max-width:760px;
  margin:0 0 40px;
}
.includes-item{
  display:flex; align-items:flex-start; gap:10px;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:8px;
  background:var(--mist);
}
.includes-item .check{
  flex-shrink:0; width:20px; height:20px; margin-top:1px;
  color:var(--blue);
}
.includes-item span{font-size:14.5px; color:var(--ink); font-weight:500;}
.service-detail-cta{
  display:flex; align-items:center; gap:16px; flex-wrap:wrap;
  padding-top:8px;
}
.service-note{font-size:13px; color:var(--ink-soft); max-width:520px; margin-top:20px;}

.download-btn{
  display:inline-flex; align-items:center; gap:8px;
  margin-bottom:28px; padding:11px 18px; font-size:14px;
}
.download-btn svg{flex-shrink:0;}

.video-embed{position:relative; width:100%; padding-top:56.25%; border-radius:10px; overflow:hidden; background:#000;}
.video-embed iframe{position:absolute; top:0; left:0; width:100%; height:100%; border:0;}

/* Course detail page */
.course-detail{padding:28px 0 96px; background:var(--paper);}
.breadcrumb{font-size:13px; color:var(--ink-soft); margin-bottom:18px;}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--blue);}
.course-detail-head{max-width:760px; margin-bottom:22px;}
.course-detail-head .eyebrow{margin-bottom:8px;}
.course-detail-head h1{margin-bottom:0;}
.feature-pills{display:flex; flex-wrap:wrap; gap:10px; margin:22px 0 20px;}
.feature-pill{
  font-size:12.5px; font-weight:600; color:var(--heading);
  background:var(--mist); border:1px solid var(--line);
  padding:7px 13px; border-radius:100px;
}
.course-layout{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:40px;
  align-items:start;
}
.course-main{min-width:0;}
.cover-placeholder{
  aspect-ratio:1/1; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  color:rgba(255,255,255,.55); font-size:13px; text-align:center; padding:12px;
  margin-bottom:8px; max-width:480px;
}
.price-card{
  border:1px solid var(--line);
  border-radius:10px;
  padding:22px;
  position:sticky;
  top:96px;
}
.price-card .promo-label{font-size:12px; color:var(--ink-soft); margin-bottom:2px;}
.price-card .price-now{font-family:'Sora',sans-serif; font-size:26px; color:var(--heading); margin-bottom:2px;}
.price-card .price-old{font-size:13px; color:#b7bcc2; margin-bottom:16px;}
.price-card .price-old s{color:#b7bcc2;}
.price-card .btn{margin-bottom:10px;}
.price-card .pay-note{font-size:12px; color:var(--ink-soft); margin-bottom:20px; line-height:1.5;}
.price-card h4{font-size:14px; margin-bottom:12px;}
.benefit-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:9px;}
.benefit-list li{display:flex; align-items:flex-start; gap:8px; font-size:13.5px; color:var(--ink-soft); line-height:1.4;}
.benefit-list .check{flex-shrink:0; width:16px; height:16px; margin-top:2px; color:var(--blue);}

.video-block{margin:44px 0 40px;}
.video-block h2{font-size:20px;}
.video-note{font-size:14.5px; margin-bottom:18px; max-width:60ch;}
.video-placeholder{
  height:280px; background:linear-gradient(135deg,#1b2733,#0a0f16);
  border-radius:10px; position:relative;
  display:flex; align-items:center; justify-content:center;
}
.video-badge{
  position:absolute; top:14px; left:14px;
  background:rgba(255,255,255,.12); color:#fff;
  font-size:11px; font-weight:700; letter-spacing:.03em;
  padding:6px 11px; border-radius:5px;
}
.play-btn{
  width:52px; height:52px; border-radius:50%; background:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 20px rgba(0,0,0,.3);
}
.play-btn svg{width:18px; height:18px; margin-left:3px;}

.course-desc{margin:40px 0;}
.course-desc h2{font-size:20px;}
.course-desc p{max-width:70ch;}

.details-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin:36px 0 44px;
  padding-top:32px;
  border-top:1px solid var(--line);
}
.detail-block .detail-label{display:flex; align-items:center; gap:8px; font-size:12.5px; color:var(--ink-soft); margin-bottom:6px;}
.detail-block .detail-label svg{width:16px; height:16px; color:var(--blue); flex-shrink:0;}
.detail-block strong{display:block; font-size:14.5px; color:var(--heading); font-weight:600;}
.detail-block .software-list{display:flex; flex-direction:column; gap:4px;}
.detail-block .software-list span{font-size:14px; color:var(--heading); font-weight:600;}

.objectives{margin:40px 0;}
.objectives h2{font-size:20px;}
.objectives ul{list-style:none; margin:16px 0 0; padding:0; display:flex; flex-direction:column; gap:10px; max-width:68ch;}
.objectives li{display:flex; align-items:flex-start; gap:9px; font-size:14.5px; color:var(--ink-soft); line-height:1.5;}
.objectives .check{flex-shrink:0; width:18px; height:18px; margin-top:1px; color:var(--blue);}

.modules{margin:40px 0;}
.modules h2{font-size:20px; margin-bottom:16px;}
.module-card{
  border:1px solid var(--line); border-radius:8px;
  padding:16px 18px; margin-bottom:10px; background:var(--mist);
}
.module-card .module-title{font-size:13px; font-weight:700; color:var(--blue); letter-spacing:.02em; margin-bottom:4px;}
.module-card .module-sessions{font-size:12.5px; color:var(--taupe); font-weight:600; margin-bottom:6px;}
.module-card p{font-size:14px; color:var(--ink-soft); margin:0;}

.certification{margin:40px 0;}
.certification h2{font-size:20px; margin-bottom:20px;}
.cert-row{
  display:flex; align-items:center; gap:24px;
  border:1px solid var(--line); border-radius:10px; padding:20px 22px;
  margin-bottom:14px; background:var(--mist);
}
.cert-row-text{flex:1; min-width:0;}
.cert-row-icon{color:var(--blue); margin-bottom:8px;}
.cert-row-icon svg{width:26px; height:26px;}
.cert-row-text h4{font-size:15.5px; margin-bottom:6px;}
.cert-row-text p{font-size:14px; margin:0;}
.cert-row-image{flex-shrink:0; width:160px;}
.cert-row-image img{width:100%; border-radius:8px; display:block; box-shadow:0 4px 14px rgba(14,42,71,.12);}
.cert-row-placeholder{
  display:flex; align-items:center; justify-content:center; text-align:center;
  width:160px; height:110px; border-radius:8px; background:var(--line); color:var(--ink-soft); font-size:11.5px; padding:8px;
}

.enrollment{margin-top:56px; padding-top:44px; border-top:1px solid var(--line);}
.enrollment h2{font-size:20px; text-align:center; margin-bottom:32px;}
.steps-row{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.step-item{text-align:center;}
.step-num{
  width:34px; height:34px; border-radius:50%; background:var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:center; font-weight:700; font-size:14px;
  margin:0 auto 14px;
}
.step-item h4{font-size:14.5px; margin-bottom:6px;}
.step-item p{font-size:13.5px; margin:0;}

/* Service case-study detail page */
.case-detail{padding:28px 0 96px; background:var(--paper);}
.case-detail-head{max-width:760px; margin-bottom:28px;}
.case-video-label{font-size:12px; font-weight:700; letter-spacing:.05em; color:var(--ink-soft); text-transform:uppercase; margin-bottom:10px;}
.case-layout{
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:40px;
  align-items:start;
}
.case-main{min-width:0;}
.case-section{margin:36px 0;}
.case-section:first-child{margin-top:0;}
.case-section h2{font-size:17px; margin-bottom:8px;}
.case-section .placeholder-text{font-size:14.5px; color:#9aa1a8; font-style:italic; margin:0; max-width:64ch;}

.deliverables-card{
  border:1px solid var(--line);
  border-radius:10px;
  padding:22px;
  position:sticky;
  top:96px;
}
.deliverables-card h3{font-size:16px; margin-bottom:8px;}
.deliverables-card > p{font-size:13.5px; color:var(--ink-soft); margin-bottom:18px;}
.deliverable-list{list-style:none; margin:0 0 20px; padding:0; display:flex; flex-direction:column;}
.deliverable-list li{
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:11px 0; border-bottom:1px solid var(--line); font-size:13.5px; color:var(--ink);
}
.deliverable-list li:last-child{border-bottom:none;}
.deliverable-list .dl-link{
  font-size:12.5px; font-weight:700; color:var(--blue); flex-shrink:0; white-space:nowrap;
}
.deliverable-list .dl-link.disabled{color:#b7bcc2; cursor:default;}

/* Project-type listing (Expedientes Técnicos) */
.project-list-head{max-width:680px; margin-bottom:40px;}
.project-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.project-card{
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
  background:var(--card-bg);
  box-shadow:0 1px 2px rgba(14,42,71,.04);
  transition:box-shadow .18s ease, border-color .18s ease, transform .18s ease;
}
.project-card:hover{border-color:var(--blue); box-shadow:0 14px 32px -12px rgba(14,42,71,.18); transform:translateY(-3px);}
.project-thumb-link{display:block; position:relative;}
.project-thumb{
  aspect-ratio:1/1;
  background:linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
  display:flex; align-items:center; justify-content:center;
  color:rgba(255,255,255,.55); font-size:13px;
}
.project-badge{
  position:absolute; top:12px; left:12px;
  background:rgba(0,0,0,.4); color:#fff;
  font-size:11px; font-weight:700; letter-spacing:.04em;
  padding:5px 10px; border-radius:5px;
}
.project-body{padding:20px 22px 22px;}
.project-body .eyebrow{font-size:11.5px; margin-bottom:8px;}
.project-body h3{font-size:16.5px; margin-bottom:8px;}
.project-body h3 a{color:inherit;}
.project-body h3 a:hover{color:var(--blue);}
.project-body p{font-size:14px; margin-bottom:12px;}
.project-note{
  display:flex; align-items:flex-start; gap:6px;
  font-size:12.5px; color:var(--ink-soft); margin-bottom:18px; line-height:1.45;
}
.project-actions{display:flex; gap:10px; flex-wrap:wrap;}
.project-actions .btn{flex:1; padding:11px 16px; font-size:13.5px; justify-content:center;}

/* Proyectos, Modelos y Plantillas (catálogo) */
.model-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
}
.model-card{
  background:var(--card-bg);
  border:1px solid var(--line);
  border-radius:10px;
  overflow:hidden;
  display:flex; flex-direction:column;
  box-shadow:0 1px 2px rgba(14,42,71,.04);
  transition:box-shadow .18s ease, border-color .18s ease, transform .18s ease;
}
.model-card:hover{border-color:var(--blue); box-shadow:0 14px 32px -12px rgba(14,42,71,.18); transform:translateY(-3px);}
.model-thumb{
  aspect-ratio:1/1;
  display:flex; align-items:center; justify-content:center;
  color:rgba(255,255,255,.55); font-size:12.5px; text-align:center; padding:0 14px;
}
.model-body{padding:16px 18px 20px; display:flex; flex-direction:column; gap:8px; flex:1;}
.model-meta{display:flex; align-items:center; gap:8px;}
.model-software{
  font-size:11px; font-weight:700; color:var(--blue); letter-spacing:.03em;
  background:#eaf2fb; padding:3px 8px; border-radius:4px;
}
.model-years{font-size:11.5px; color:var(--ink-soft);}
.model-card h3{font-size:15.5px; margin-bottom:0; line-height:1.3;}
.model-card p.model-desc{font-size:13px; color:var(--ink-soft); margin:0; flex:1; line-height:1.45;}
.model-price{font-size:13.5px; color:var(--ink-soft); margin:4px 0 0;}
.model-price strong{color:var(--heading); font-size:16.5px; font-family:'Sora',sans-serif;}
.model-price s{color:#b7bcc2; font-size:12.5px; display:block;}
.model-pay-note{font-size:11.5px; color:#9aa1a8; margin:0;}
.model-actions{display:flex; gap:8px; margin-top:10px;}
.model-actions .btn{flex:1; padding:10px 8px; font-size:12.5px; justify-content:center;}

/* Dark mode */
:root[data-theme="dark"]{
  --navy: #3A6EA5;
  --navy-2: #4A80B8;
  --ink: #E7EBEF;
  --ink-soft: #A9B2BC;
  --paper: #10171F;
  --mist: #1A2530;
  --line: #2B3742;
  --heading: #F3F6F9;
  --card-bg: #161F29;
  --header-bg: rgba(16,23,31,.9);
}
:root[data-theme="dark"] body{background:var(--paper);}
:root[data-theme="dark"] .course-tag{background:#2A2620; color:#D8CFC2;}
:root[data-theme="dark"] .model-software{background:#152538; color:#8FC0F0;}
:root[data-theme="dark"] .service-btn{color:#fff;}
:root[data-theme="dark"] .btn-outline{border-color:var(--line); color:var(--ink);}
:root[data-theme="dark"] .btn-outline:hover{background:var(--navy); border-color:var(--navy); color:#fff;}
:root[data-theme="dark"] .btn-ghost{border-color:var(--line); color:var(--ink);}
:root[data-theme="dark"] .contact-note, :root[data-theme="dark"] .placeholder-text{color:#7E8892;}
:root[data-theme="dark"] .course-price s, :root[data-theme="dark"] .model-price s, :root[data-theme="dark"] .price-card .price-old s{color:#5F6971;}
:root[data-theme="dark"] .whatsapp-cta{background:var(--paper);}
:root[data-theme="dark"] .theme-toggle .sun-icon{display:block;}
:root[data-theme="dark"] .theme-toggle .moon-icon{display:none;}
:root[data-theme="dark"] .brand-mark{filter:brightness(0) invert(1);}
.theme-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px; border-radius:8px;
  border:1.5px solid var(--line); background:var(--card-bg);
  color:var(--heading); cursor:pointer; flex-shrink:0;
  transition:border-color .18s ease, background .18s ease;
}
.theme-toggle:hover{border-color:var(--blue);}
.theme-toggle svg{width:18px; height:18px;}
.theme-toggle .sun-icon{display:none;}

/* Certificate validation result */
.cert-result{margin-top:20px; display:none;}
.cert-result.show{display:block;}
.cert-result-banner{
  display:flex; align-items:center; gap:10px;
  padding:12px 16px; border-radius:8px; font-size:14px; font-weight:600; margin-bottom:14px;
}
.cert-result-banner.ok{background:#e7f7ee; color:#166a3f; border:1px solid #b9e7cc;}
.cert-result-banner.err{background:#fdeaea; color:#a3271e; border:1px solid #f3c9c9;}
.cert-pdf-frame{
  width:100%; height:480px; border:1px solid var(--line); border-radius:8px; background:var(--mist);
}
.cert-result-actions{margin-top:10px;}
.cert-loading{font-size:13.5px; color:var(--ink-soft); margin-top:14px;}

/* Footer */
.site-footer{background:#0A1E33; padding:40px 0;}
.footer-inner{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px;}
.footer-mark{height:34px; filter:brightness(0) invert(1); opacity:.85;}
.footer-nav{display:flex; gap:22px; flex-wrap:wrap;}
.footer-nav a{font-size:13.5px; color:#aab4c0;}
.footer-nav a:hover{color:#fff;}
.footer-copy{font-size:12.5px; color:#6c7a8a; width:100%; margin-top:8px;}

/* Responsive */
@media (max-width: 1024px){
  .service-grid, .service-grid.cols-4, .service-grid.cols-5{grid-template-columns:repeat(2,1fr);}
  .course-layout{grid-template-columns:1fr;}
  .price-card{position:static;}
  .case-layout{grid-template-columns:1fr;}
  .deliverables-card{position:static;}
  .details-grid{grid-template-columns:repeat(2,1fr);}
  .model-grid{grid-template-columns:repeat(2,1fr);}
  .project-grid{grid-template-columns:repeat(2,1fr);}
  .cert-row{flex-direction:column; align-items:stretch;}
  .cert-row-image, .cert-row-placeholder{width:100%;}
}
@media (max-width: 900px){
  .service-grid, .service-grid.cols-4, .service-grid.cols-5{grid-template-columns:1fr;}
  .steps-row{grid-template-columns:1fr;}
  .cert-grid{grid-template-columns:1fr;}
  .course-grid{grid-template-columns:repeat(2,1fr);}
  .model-grid{grid-template-columns:1fr;}
  .project-grid{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;}
  .certificate-inner{padding:32px;}
  .contact-inner{grid-template-columns:1fr; gap:40px;}
}
@media (max-width: 720px){
  .main-nav{
    position:fixed; top:76px; left:0; right:0; bottom:0;
    background:var(--card-bg); flex-direction:column; align-items:flex-start;
    padding:24px; gap:6px; transform:translateY(-8px);
    opacity:0; pointer-events:none; transition:opacity .15s ease, transform .15s ease;
  }
  .main-nav.open{opacity:1; pointer-events:auto; transform:translateY(0);}
  .main-nav a{padding:12px 0; width:100%; border-bottom:1px solid var(--line); font-size:16px;}
  .nav-toggle{display:flex;}
  .aula-btn{display:none;}
  .course-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;}
}