:root{
  --bg:#f3f6f9;
  --panel:#ffffff;
  --text:#16212b;
  --muted:#5c6b78;
  --line:#dce4ea;
  --brand:#0d5f7f;
  --brand2:#0a4962;
  --accent:#e9f5fb;
  --warn:#fff7df;
  --ok:#edf9f1;
  --shadow:0 10px 28px rgba(17,34,51,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.65;
}
a{color:inherit}
.wrap{width:min(1180px,92%);margin:auto}
.topbar{
  background:#0a2230;color:#fff;padding:10px 0;font-size:.95rem
}
.topbar .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
.hero{
  background:linear-gradient(135deg,#0d5f7f,#0a3f59);
  color:#fff;padding:58px 0 46px;border-bottom:5px solid #d8eef7
}
.hero h1{font-size:clamp(2rem,4vw,3.7rem);line-height:1.08;margin:0 0 15px}
.hero p{font-size:1.12rem;max-width:850px;margin:0}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.badge{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.25);padding:7px 12px;border-radius:999px}
main{padding:36px 0 70px}
.container{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
  margin:0 0 24px;
  box-shadow:var(--shadow);
}
.container h2{margin-top:0;color:var(--brand2)}
.container h3{color:var(--brand2)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{
  border:1px solid var(--line);border-radius:15px;padding:20px;background:#fff
}
.card h3{margin-top:0}
.card .num{
  display:inline-flex;width:38px;height:38px;border-radius:50%;
  align-items:center;justify-content:center;background:var(--accent);
  color:var(--brand);font-weight:700;margin-bottom:10px
}
.btn{
  display:inline-block;text-decoration:none;background:var(--brand);color:#fff;
  padding:12px 18px;border-radius:12px;font-weight:700;border:none;cursor:pointer
}
.btn:hover{background:var(--brand2)}
.btn.alt{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.navrow{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.notice{background:var(--warn);border-left:5px solid #d89e16}
.success{background:var(--ok);border-left:5px solid #2f8a49}
.visual-placeholder{
  min-height:280px;border:2px dashed #9db5c1;border-radius:16px;
  display:flex;align-items:center;justify-content:center;text-align:center;
  padding:26px;background:#f8fbfd;color:#567
}
.module{
  border-left:6px solid var(--brand);position:relative
}
.module small{color:var(--muted)}
.progress{
  height:10px;background:#e7edf1;border-radius:999px;overflow:hidden;margin-top:12px
}
.progress span{display:block;height:100%;background:var(--brand)}
.quiz label{
  display:block;border:1px solid var(--line);border-radius:12px;padding:12px;margin:9px 0;cursor:pointer
}
.quiz button{margin-top:10px}
.quiz-result{margin-top:12px;font-weight:700}
.footer{
  background:#0a2230;color:#dce7ed;padding:30px 0;margin-top:40px
}
.footer a{color:#fff}
@media(max-width:850px){
  .grid,.grid.two{grid-template-columns:1fr}
  .container{padding:21px}
  .hero{padding:42px 0 34px}
}

.logo-center{display:block;max-width:min(780px,100%);margin:0 auto 18px;filter:drop-shadow(0 8px 18px rgba(0,0,0,.18))}
.hero-grid{display:grid;grid-template-columns:1.2fr .9fr;gap:26px;align-items:center}
.hero-visual img,.inline-photo img{width:100%;height:auto;display:block;border-radius:16px;border:1px solid rgba(255,255,255,.18);box-shadow:var(--shadow)}
.inline-photo img{border:1px solid var(--line)}
.photo-caption{font-size:.93rem;color:var(--muted);margin-top:10px}
.image-frame{overflow:hidden;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.image-frame img{width:100%;height:auto;display:block}
.logo-strip{text-align:center;margin-bottom:12px}
@media(max-width:850px){.hero-grid{grid-template-columns:1fr}.logo-center{max-width:520px}}

.anchor-offset{scroll-margin-top:20px}
.quick-nav{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
.quick-nav.center{justify-content:center}
.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.btn.disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:default;pointer-events:none}
.intro-panel{background:linear-gradient(135deg,#ffffff,#f2f8fb);border:1px solid var(--line);border-radius:22px;padding:26px;box-shadow:var(--shadow)}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:center}
.intro-list{margin:16px 0 0;padding:0;list-style:none}
.intro-list li{padding:8px 0;border-bottom:1px dashed var(--line)}
.intro-list li:last-child{border-bottom:none}
.pill-title{display:inline-block;background:var(--accent);color:var(--brand2);padding:7px 12px;border-radius:999px;font-weight:700;margin-bottom:10px}
.subnav{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 0}
.subnav a,.subnav span{display:inline-block}
.small-muted{color:var(--muted);font-size:.95rem}
.header-actions{margin-top:14px}
.section-title-row{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap}
@media(max-width:850px){.intro-grid{grid-template-columns:1fr}}


/* ===== V0.2 · INTRO + NAVEGACIÓN GLOBAL ===== */

.site-actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  justify-content:flex-end;
  align-items:center;
}
.site-actions a{
  text-decoration:none;
  color:#fff;
  border:1px solid rgba(255,255,255,.35);
  padding:7px 12px;
  border-radius:999px;
  font-weight:700;
}
.site-actions a:hover{
  background:rgba(255,255,255,.10);
}

.intro-screen{
  position:relative;
  min-height:88vh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:#081b26;
  color:#fff;
}
.intro-screen::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(5,20,30,.92) 0%,rgba(5,20,30,.78) 42%,rgba(5,20,30,.28) 72%,rgba(5,20,30,.18) 100%),
    url("../img/reparacion-pc-taller.png") center/cover no-repeat;
  transform:scale(1.02);
}
.intro-inner{
  position:relative;
  z-index:2;
  width:min(1180px,92%);
  margin:auto;
  padding:64px 0;
}
.intro-logo{
  width:min(720px,92%);
  max-height:190px;
  object-fit:contain;
  object-position:left center;
  margin-bottom:24px;
  filter:drop-shadow(0 10px 30px rgba(0,0,0,.45));
  animation:introFade .8s ease both;
}
.intro-kicker{
  display:inline-block;
  padding:7px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.20);
  margin-bottom:14px;
  font-weight:700;
  letter-spacing:.04em;
  animation:introFade .9s .08s ease both;
}
.intro-title{
  font-size:clamp(2.3rem,5.5vw,5rem);
  line-height:1.02;
  margin:0 0 16px;
  max-width:850px;
  animation:introFade .9s .16s ease both;
}
.intro-subtitle{
  font-size:clamp(1.05rem,2vw,1.35rem);
  max-width:780px;
  color:#e5f2f7;
  margin-bottom:28px;
  animation:introFade .9s .24s ease both;
}
.intro-buttons{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  animation:introFade .9s .32s ease both;
}
.intro-btn{
  display:inline-block;
  text-decoration:none;
  padding:13px 19px;
  border-radius:12px;
  font-weight:800;
  background:#fff;
  color:#0b4d68;
  border:1px solid #fff;
}
.intro-btn.secondary{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.55);
}
.intro-btn:hover{transform:translateY(-1px)}

@keyframes introFade{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}

.lesson-toolbar{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin:0 0 24px;
}
.lesson-toolbar .left,
.lesson-toolbar .right{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.btn.home{
  background:#102b3a;
}
.btn.module{
  background:#16627f;
}

@media(max-width:850px){
  .site-actions{justify-content:flex-start}
  .intro-screen{min-height:auto}
  .intro-screen::before{
    background:
      linear-gradient(rgba(5,20,30,.90),rgba(5,20,30,.82)),
      url("../img/reparacion-pc-taller.png") center/cover no-repeat;
  }
  .intro-logo{max-height:130px}
}

.component-photo img{width:100%;height:320px;display:block;object-fit:cover;border-radius:16px}
.component-photo{margin:10px 0 14px}
.mini-note{font-size:.95rem;color:var(--muted)}
.video-box{padding:0;overflow:hidden}
.video-placeholder{padding:28px}

.lesson-photo img{width:100%;height:330px;object-fit:cover;display:block;border-radius:16px}
.explain-card{background:#f8fbfd;border:1px solid var(--line);border-radius:14px;padding:18px;margin-top:14px}
.keypoint{font-weight:700;color:var(--brand2)}
.video-player{width:100%;display:block;border-radius:16px;background:#000;box-shadow:var(--shadow)}
.definition{font-size:1.08rem}


/* ===== Rediseño Lección 1.2 · Plantilla completa ===== */
.lesson-pro-header{background:linear-gradient(90deg,#0a2740,#0f4a72);color:#fff;border-bottom:4px solid #3ab3e5}
.lesson-pro-header .wrap{display:grid;grid-template-columns:220px 1fr 220px;gap:18px;align-items:center;padding:14px 0}
.lesson-pro-header img{max-width:100%;height:auto;display:block}
.lesson-pro-title h1{margin:0;font-size:clamp(1.65rem,3.4vw,2.8rem);line-height:1.02;letter-spacing:.02em}
.lesson-pro-title p{margin:.3rem 0 0;color:#d9edf7;font-size:1rem}
.lesson-pro-badge{justify-self:end;background:#ef4836;color:#fff;padding:12px 16px;border-radius:999px;font-weight:800;text-align:center;line-height:1.1}
.lesson-breadcrumbs{background:#fff;border-bottom:1px solid var(--line)}
.lesson-breadcrumbs .wrap{padding:10px 0;color:#617783;font-size:.95rem}
.lesson-breadcrumbs strong{color:#14364d}
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:22px;padding-top:26px}
.lesson-main-col{min-width:0}
.lesson-side-col{position:sticky;top:14px;align-self:start}
.lesson-top-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);margin-bottom:22px}
.lesson-chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}
.lesson-chip{display:inline-block;background:#e8f3ff;color:#105b88;padding:8px 13px;border-radius:999px;font-weight:800}
.lesson-top-panel h2{margin:0 0 10px;font-size:clamp(2rem,4vw,3rem);color:#0b2d46;line-height:1.06}
.lesson-top-panel p{margin:0;color:#556b78;font-size:1.05rem}
.lesson-meta-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
.lesson-meta{background:#f5fbff;border:1px solid #d8eaf4;border-radius:14px;padding:14px;text-align:center}
.lesson-meta strong{display:block;color:#0b5178;margin-bottom:4px}
.num-block{background:#fff;border:1px solid #d8e4eb;border-radius:18px;box-shadow:0 8px 24px rgba(12,46,67,.06);overflow:hidden;margin-bottom:18px}
.num-head{display:flex;align-items:center;gap:12px;padding:14px 18px;background:#eef7fc;border-bottom:1px solid #d8e4eb}
.num-badge{width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:1.05rem;flex:0 0 auto}
.num-badge.blue{background:#1f73c8}.num-badge.green{background:#30a34d}.num-badge.orange{background:#ea7a1f}.num-badge.purple{background:#8a56db}.num-badge.red{background:#d64545}.num-badge.teal{background:#0991a2}.num-badge.gold{background:#d69a11}.num-badge.pink{background:#d54884}
.num-head h3{margin:0;font-size:1.42rem;color:#093b61}
.num-body{padding:18px}
.num-grid-2{display:grid;grid-template-columns:1.05fr 1fr;gap:18px;align-items:start}
.num-grid-2.rev{grid-template-columns:1fr 1.05fr}
.num-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pro-photo{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.pro-photo img{width:100%;height:260px;object-fit:cover;display:block}
.photo-label{display:inline-block;margin:10px 0 6px;padding:6px 10px;border-radius:999px;background:#eff7ff;color:#0f6294;font-size:.87rem;font-weight:700}
.step-list,.plain-list{margin:.35rem 0 0 1.2rem;padding:0}
.step-list li,.plain-list li{margin:.28rem 0}
.tip-box{margin-top:12px;background:#fff4da;border-left:5px solid #efb118;border-radius:10px;padding:12px 14px;color:#5e4a00}
.side-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow);margin-bottom:16px}
.side-box h4{margin:0 0 12px;color:#0a4066;font-size:1.13rem}
.side-progress{height:10px;background:#e7eef2;border-radius:999px;overflow:hidden;margin:10px 0 6px}
.side-progress span{display:block;height:100%;width:20%;background:#3caf4f}
.side-module-list{list-style:none;margin:0;padding:0}
.side-module-list li{padding:9px 0;border-bottom:1px solid #edf2f5;font-size:.96rem;color:#576d7b}
.side-module-list li:last-child{border-bottom:none}
.side-module-list .active{font-weight:800;color:#1667a1}
.side-checks{list-style:none;margin:0;padding:0}
.side-checks li{position:relative;padding:7px 0 7px 28px}
.side-checks li:before{content:'✓';position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:50%;background:#37a84a;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:900}
.inline-note{background:#f3f8fc;border:1px solid #dce8ef;border-radius:12px;padding:12px 14px}
.video-block video{width:100%;display:block;border-radius:14px;background:#000}
.video-desc{display:grid;grid-template-columns:1.05fr 1fr;gap:16px;align-items:start;margin-top:14px}
.info-card{background:#f6fbff;border:1px solid #d7e8f3;border-radius:14px;padding:14px}
.bottom-actions{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:24px 0 8px}
.bottom-actions a,.bottom-actions span{display:block;text-align:center;text-decoration:none;padding:12px 10px;border-radius:12px;border:1px solid #cedbe4;background:#fff;color:#184e6b;font-weight:800}
.bottom-actions .primary{background:#1976d2;color:#fff;border-color:#1976d2}
.bottom-actions .disabled{opacity:.55}
.mini-icon-title{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.mini-icon-title .icon{width:34px;height:34px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:#e8f3ff;color:#14669b;font-weight:900}
.small-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.small-grid-2 .pro-photo img{height:210px}
@media(max-width:1050px){.lesson-layout{grid-template-columns:1fr}.lesson-side-col{position:static}.lesson-pro-header .wrap{grid-template-columns:1fr;text-align:center}.lesson-pro-badge{justify-self:center}.lesson-pro-header img{margin:0 auto}}
@media(max-width:760px){.lesson-meta-row,.num-grid-2,.num-grid-2.rev,.num-grid-3,.video-desc,.small-grid-2,.bottom-actions{grid-template-columns:1fr}.pro-photo img{height:auto}.lesson-top-panel h2{font-size:2rem}}

/* ===== DOCENTE DEL CURSO ===== */
.teacher-box{
  background:linear-gradient(135deg,#eef8fd,#ffffff);
  border:1px solid #cfe4ef;
  border-radius:16px;
  padding:16px;
  box-shadow:var(--shadow);
  margin-bottom:16px;
}
.teacher-label{
  display:inline-block;
  font-size:.78rem;
  font-weight:800;
  letter-spacing:.04em;
  color:#0a5f87;
  background:#dff2fb;
  padding:5px 9px;
  border-radius:999px;
  margin-bottom:8px;
}
.teacher-name{
  font-size:1.05rem;
  line-height:1.25;
  font-weight:800;
  color:#0a3550;
  margin:0 0 4px;
}
.teacher-role{
  margin:0;
  color:#5d7280;
  font-size:.93rem;
}
.teacher-inline{
  display:flex;
  gap:12px;
  align-items:center;
  flex-wrap:wrap;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid #e2ebf0;
}
.teacher-inline strong{color:#0a3d60}

.staff-box{
  background:#ffffff;
  border:1px solid #cfe0ea;
  border-radius:16px;
  padding:16px;
  box-shadow:var(--shadow);
  margin-bottom:16px;
}
.staff-label{
  display:inline-block;
  font-size:.78rem;
  font-weight:800;
  letter-spacing:.04em;
  color:#0a5f87;
  background:#e6f4fb;
  padding:5px 9px;
  border-radius:999px;
  margin-bottom:8px;
}
.staff-name{
  font-size:1.05rem;
  line-height:1.25;
  font-weight:800;
  color:#0a3550;
  margin:0 0 5px;
}
.staff-role{
  margin:0;
  color:#5c7280;
  font-size:.93rem;
}
.staff-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
  margin-top:16px;
}
@media(max-width:700px){.staff-grid{grid-template-columns:1fr}}


/* ===== V0.5 · EQUIPO DOCENTE EN INTRO ===== */
.intro-staff{
  margin-top:26px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  max-width:900px;
}
.intro-staff-card{
  background:rgba(255,255,255,.11);
  border:1px solid rgba(255,255,255,.28);
  border-radius:15px;
  padding:14px 16px;
  backdrop-filter:blur(5px);
}
.intro-staff-card .role{
  display:inline-block;
  font-size:.76rem;
  font-weight:900;
  letter-spacing:.05em;
  color:#dff5ff;
  margin-bottom:5px;
}
.intro-staff-card .name{
  display:block;
  font-size:1.04rem;
  font-weight:900;
  color:#fff;
  line-height:1.2;
}
.intro-staff-card .detail{
  display:block;
  margin-top:4px;
  color:#e2eef4;
  font-size:.9rem;
}
@media(max-width:760px){
  .intro-staff{grid-template-columns:1fr}
}

/* ===== V0.5 · LECCIÓN 1.2 PROFESIONAL ===== */
.pro-course-header{
  background:
    linear-gradient(90deg,rgba(5,34,56,.97),rgba(6,63,94,.87)),
    url("../img/reparacion-pc-taller.png") center/cover no-repeat;
  color:#fff;
  border-bottom:4px solid #3ba7d8;
}
.pro-course-header .wrap{
  display:grid;
  grid-template-columns:245px 1fr auto;
  gap:22px;
  align-items:center;
  min-height:118px;
  padding:16px 0;
}
.pro-course-logo{width:100%;max-height:88px;object-fit:contain}
.pro-course-title h1{margin:0;font-size:clamp(2rem,4vw,3.45rem);line-height:1}
.pro-course-title p{margin:7px 0 0;color:#e6f4fa}
.pro-course-badge{background:#ee493b;padding:13px 17px;border-radius:999px;font-weight:900;text-align:center}
.pro-topnav{background:#0b4e76;color:#fff}
.pro-topnav .wrap{display:flex;flex-wrap:wrap}
.pro-topnav a{color:#fff;text-decoration:none;padding:10px 15px;border-right:1px solid rgba(255,255,255,.16);font-weight:700}
.pro-breadcrumb{background:#fff;border-bottom:1px solid #d7e2e9}
.pro-breadcrumb .wrap{padding:9px 0;font-size:.9rem;color:#617581}

.pro-layout{
  width:min(1460px,96%);
  margin:18px auto;
  display:grid;
  grid-template-columns:minmax(0,1fr) 250px;
  gap:16px;
  align-items:start;
}
.pro-main{min-width:0}
.pro-titlebox{
  background:#fff;border:1px solid #d4e1e9;border-radius:14px;
  padding:18px 20px;margin-bottom:12px;box-shadow:0 4px 16px rgba(15,48,70,.05)
}
.pro-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.pro-tag{background:#dceefe;color:#0a5a91;padding:7px 11px;border-radius:9px;font-weight:900;font-size:.86rem}
.pro-titlebox h2{margin:0 0 5px;color:#0a2941;font-size:clamp(1.8rem,3vw,2.7rem)}
.pro-titlebox>p{margin:0;color:#526a79}
.pro-meta-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:13px}
.pro-meta{background:#f2f8fc;border:1px solid #d7e6ef;border-radius:10px;padding:9px;text-align:center;font-size:.87rem}
.pro-meta strong{display:block;color:#0a527d}

.pro-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:11px}
.pro-card{background:#fff;border:1px solid #d3e0e8;border-radius:13px;overflow:hidden;box-shadow:0 3px 12px rgba(15,48,70,.04)}
.pro-card-head{display:flex;align-items:center;gap:9px;padding:10px 12px;border-bottom:1px solid #dce6ec;background:#fbfdff}
.pro-card-head h3{margin:0;color:#0b3d62;font-size:1.06rem}
.pro-num{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#1778d2;color:#fff;font-weight:900;flex:0 0 32px}
.pro-num.green{background:#3da756}.pro-num.orange{background:#f27c22}.pro-num.red{background:#d83a37}.pro-num.purple{background:#7a50d5}.pro-num.teal{background:#139a9b}
.pro-card-body{padding:11px}
.pro-card-body img{width:100%;height:205px;object-fit:cover;border-radius:9px;display:block;border:1px solid #dce6ec}
.pro-card-body p{margin:8px 0}
.pro-card-body ul,.pro-card-body ol{margin:7px 0 0;padding-left:20px}
.pro-tip{margin-top:9px;background:#fff4d8;border-left:4px solid #e9a900;border-radius:8px;padding:9px 10px;font-size:.9rem}
.pro-wide{grid-column:1/-1}
.pro-split{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
.pro-video video{width:100%;display:block;border-radius:9px;background:#000}

.pro-side{position:sticky;top:12px}
.pro-sidebox{background:#fff;border:1px solid #d3e0e8;border-radius:13px;padding:14px;margin-bottom:11px;box-shadow:0 3px 12px rgba(15,48,70,.04)}
.pro-sidebox h4{margin:0 0 10px;color:#0b3d62}
.pro-progress{height:9px;background:#e5edf2;border-radius:999px;overflow:hidden}
.pro-progress span{display:block;height:100%;width:20%;background:#39a852}
.pro-side-list{list-style:none;padding:0;margin:0}
.pro-side-list li{padding:8px 0;border-bottom:1px solid #edf2f5;font-size:.88rem}
.pro-side-list li:last-child{border-bottom:0}
.pro-side-list .active{font-weight:900;color:#116faf}
.pro-staff-card{background:#eef8fd;border:1px solid #cfe4ef;border-radius:12px;padding:12px;margin-bottom:10px}
.pro-staff-card .role{font-size:.73rem;font-weight:900;color:#0a638c}
.pro-staff-card .name{font-weight:900;color:#0a3550;margin-top:4px}
.pro-staff-card .detail{font-size:.86rem;color:#607583;margin-top:3px}
.pro-bottomnav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:14px 0 24px}
.pro-bottomnav a,.pro-bottomnav span{padding:11px 8px;text-align:center;text-decoration:none;border-radius:10px;border:1px solid #ccdce5;background:#fff;color:#174e6c;font-weight:800;font-size:.88rem}
.pro-bottomnav .next{background:#1578d3;color:#fff;border-color:#1578d3}
.pro-bottomnav .disabled{opacity:.45}
@media(max-width:980px){
 .pro-course-header .wrap{grid-template-columns:1fr;text-align:center}
 .pro-course-logo{max-width:380px;margin:auto}
 .pro-course-badge{justify-self:center}
 .pro-layout{grid-template-columns:1fr}
 .pro-side{position:static}
 .pro-meta-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
 .pro-grid,.pro-split,.pro-meta-grid{grid-template-columns:1fr}
 .pro-bottomnav{grid-template-columns:1fr}
 .pro-card-body img{height:auto}
}


/* ===== LECCIÓN 1.3 · TIPOS DE ORDENADORES ===== */
.type-use{
  background:#fff4d9;
  border-left:4px solid #e7a500;
  border-radius:8px;
  padding:9px 10px;
  margin-top:9px;
  font-size:.9rem;
}
.type-use strong{color:#855e00}
.compare-table{width:100%;border-collapse:collapse;font-size:.9rem}
.compare-table th,.compare-table td{border:1px solid #d9e4eb;padding:9px;text-align:left}
.compare-table th{background:#edf7fc;color:#0a4e78}
.compare-table tr:nth-child(even) td{background:#fafcfd}


/* ===== LECCIÓN 1.4 · PLACA BASE ===== */
.board-callout{
  background:#eef8fd;
  border:1px solid #cfe3ee;
  border-radius:10px;
  padding:10px 12px;
  margin-top:10px;
}
.board-callout strong{color:#0b5d86}

/* ===== INTRO · DOCENTE DESTACADA ===== */
.intro-staff{
  margin-top:26px;
  display:grid;
  grid-template-columns:1.25fr .85fr;
  gap:16px;
  max-width:980px;
}
.intro-staff-card{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.30);
  border-radius:16px;
  padding:16px 18px;
  backdrop-filter:blur(5px);
}
.intro-staff-card.teacher-featured{
  background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(207,239,255,.18));
  border:2px solid rgba(255,255,255,.72);
  box-shadow:0 10px 28px rgba(0,0,0,.28);
  transform:scale(1.02);
}
.intro-staff-card.teacher-featured .role{
  background:#ffffff;
  color:#0a5b82;
  padding:6px 10px;
  border-radius:999px;
}
.intro-staff-card .role{
  display:inline-block;
  font-size:.77rem;
  font-weight:900;
  letter-spacing:.05em;
  color:#e9f8ff;
  margin-bottom:7px;
}
.intro-staff-card .name{
  display:block;
  font-size:1.12rem;
  font-weight:900;
  color:#fff;
  line-height:1.22;
}
.intro-staff-card.teacher-featured .name{
  font-size:1.34rem;
}
.intro-staff-card .detail{
  display:block;
  margin-top:5px;
  color:#e1eef4;
  font-size:.92rem;
}
@media(max-width:760px){
  .intro-staff{grid-template-columns:1fr}
  .intro-staff-card.teacher-featured{transform:none}
}


/* ===== V0.7.2 · DOCENTE PRINCIPAL MUY DESTACADA EN INTRO ===== */
.intro-staff{
  margin-top:30px;
  display:grid;
  grid-template-columns:1.55fr .9fr;
  gap:18px;
  max-width:1040px;
  align-items:stretch;
}
.intro-staff-card{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.26);
  border-radius:18px;
  padding:18px 20px;
  backdrop-filter:blur(5px);
}
.intro-staff-card.teacher-featured{
  background:linear-gradient(135deg,rgba(25,12,1,.44),rgba(83,53,10,.34),rgba(255,245,214,.12));
  border:2px solid rgba(255,217,102,.88);
  box-shadow:0 14px 34px rgba(0,0,0,.34), inset 0 0 0 1px rgba(255,240,190,.20);
  transform:scale(1.03);
  position:relative;
  overflow:hidden;
}
.intro-staff-card.teacher-featured:before{
  content:"DOCENTE PRINCIPAL";
  position:absolute;
  top:14px;
  right:16px;
  font-size:.8rem;
  font-weight:900;
  letter-spacing:.08em;
  color:#fff5cf;
  background:rgba(119,80,8,.65);
  border:1px solid rgba(255,220,120,.55);
  border-radius:999px;
  padding:6px 10px;
}
.intro-staff-card .role{
  display:inline-block;
  font-size:.8rem;
  font-weight:900;
  letter-spacing:.05em;
  margin-bottom:8px;
}
.intro-staff-card .name{
  display:block;
  font-weight:900;
  line-height:1.15;
}
.intro-staff-card .detail{
  display:block;
  margin-top:6px;
  font-size:.93rem;
  color:#e8eff4;
}
.intro-staff-card.teacher-featured .role{
  color:#ffe49a;
  text-shadow:0 1px 8px rgba(0,0,0,.35);
  font-size:.98rem;
}
.intro-staff-card.teacher-featured .name{
  font-size:1.9rem;
  margin-top:2px;
  background:linear-gradient(180deg,#fff6ce 0%,#ffd86e 45%,#d8a73a 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-shadow:0 1px 0 rgba(255,255,255,.10), 0 2px 18px rgba(0,0,0,.30);
}
.intro-staff-card.teacher-featured .detail{
  color:#fff3cf;
  font-size:1.02rem;
}
.intro-staff-card.teacher-featured .mini-line{
  margin-top:10px;
  color:#fbe8b2;
  font-size:.92rem;
}
.intro-staff-card.adviser-card .role{
  color:#dff5ff;
}
.intro-staff-card.adviser-card .name{
  font-size:1.12rem;
  color:#ffffff;
}
@media(max-width:760px){
  .intro-staff{grid-template-columns:1fr}
  .intro-staff-card.teacher-featured{transform:none}
  .intro-staff-card.teacher-featured .name{font-size:1.6rem}
  .intro-staff-card.teacher-featured:before{position:static;display:inline-block;margin-bottom:8px}
}


/* ===== V0.7.3 · CORRECCIÓN INTRO DOCENTE ===== */
.intro-staff{
  margin-top:28px !important;
  display:grid !important;
  grid-template-columns:minmax(0,1.35fr) minmax(280px,.85fr) !important;
  gap:16px !important;
  max-width:980px !important;
  align-items:stretch !important;
}

.intro-staff-card,
.intro-staff-card.teacher-featured,
.intro-staff-card.adviser-card{
  transform:none !important;
  overflow:visible !important;
  position:relative !important;
  border-radius:16px !important;
  padding:18px 20px !important;
  backdrop-filter:none !important;
}

.intro-staff-card.teacher-featured{
  background:rgba(17,25,31,.82) !important;
  border:2px solid #d6ae4c !important;
  box-shadow:0 10px 28px rgba(0,0,0,.28) !important;
}

.intro-staff-card.teacher-featured:before{
  content:none !important;
  display:none !important;
}

.intro-staff-card.teacher-featured .role{
  display:block !important;
  width:auto !important;
  background:transparent !important;
  color:#e5c56f !important;
  border:0 !important;
  padding:0 !important;
  margin:0 0 8px 0 !important;
  border-radius:0 !important;
  font-size:.88rem !important;
  font-weight:900 !important;
  letter-spacing:.04em !important;
  line-height:1.25 !important;
  text-shadow:none !important;
}

.intro-staff-card.teacher-featured .name{
  display:block !important;
  margin:0 0 7px 0 !important;
  font-size:1.75rem !important;
  line-height:1.15 !important;
  font-weight:900 !important;
  color:#e7c86f !important;
  background:none !important;
  -webkit-background-clip:initial !important;
  background-clip:initial !important;
  text-shadow:none !important;
}

.intro-staff-card.teacher-featured .detail{
  display:block !important;
  margin:0 !important;
  color:#ffffff !important;
  font-size:1rem !important;
  line-height:1.45 !important;
}

.intro-staff-card.teacher-featured .mini-line{
  display:block !important;
  margin-top:7px !important;
  color:#d9e3e9 !important;
  font-size:.9rem !important;
  line-height:1.4 !important;
}

.intro-staff-card.adviser-card{
  background:rgba(22,31,38,.72) !important;
  border:1px solid rgba(255,255,255,.32) !important;
  box-shadow:none !important;
}

.intro-staff-card.adviser-card .role{
  display:block !important;
  margin:0 0 8px 0 !important;
  color:#dceaf1 !important;
  font-size:.78rem !important;
  font-weight:900 !important;
  letter-spacing:.04em !important;
  line-height:1.25 !important;
}

.intro-staff-card.adviser-card .name{
  display:block !important;
  margin:0 0 6px 0 !important;
  color:#ffffff !important;
  font-size:1.08rem !important;
  line-height:1.2 !important;
  font-weight:900 !important;
  text-shadow:none !important;
}

.intro-staff-card.adviser-card .detail{
  display:block !important;
  margin:0 !important;
  color:#e1e9ee !important;
  font-size:.9rem !important;
  line-height:1.4 !important;
}

.intro-buttons{
  margin-top:18px !important;
}

@media(max-width:800px){
  .intro-staff{
    grid-template-columns:1fr !important;
  }
  .intro-staff-card.teacher-featured .name{
    font-size:1.5rem !important;
  }
}


/* ===== LECCIÓN 1.5 · CPU, RAM Y ALMACENAMIENTO ===== */
.spec-table{width:100%;border-collapse:collapse;font-size:.9rem;margin-top:10px}
.spec-table th,.spec-table td{border:1px solid #d8e4eb;padding:9px;text-align:left}
.spec-table th{background:#edf7fc;color:#0a4f78}
.spec-table tr:nth-child(even) td{background:#fbfcfd}
.compare-note{background:#eef8fd;border-left:4px solid #2088c6;border-radius:8px;padding:10px 12px;margin-top:10px}