/* ============================================================
   SONAR ACADEMY — plataforma · sistema de estilos
   Marca HolaSonar · Benton Modern (títulos) + Helvetica Neue (texto)
   ============================================================ */

/* ---- Fuentes ---- */
@font-face { font-family:'Benton Modern'; src:url('fonts/BentonModDispExCond-Light.otf') format('opentype'); font-weight:300; font-style:normal; font-display:swap; }
@font-face { font-family:'Benton Modern'; src:url('fonts/BentonModDispExCond-Regular.otf') format('opentype'); font-weight:400 700; font-style:normal; font-display:swap; }
@font-face { font-family:'Benton Modern'; src:url('fonts/BentonModDispExCond-RegularIt.otf') format('opentype'); font-weight:400 700; font-style:italic; font-display:swap; }
@font-face { font-family:'Helvetica Neue LT Pro'; src:url('fonts/HelveticaNeueLTProLt.otf') format('opentype'); font-weight:300 400; font-style:normal; font-display:swap; }
@font-face { font-family:'Helvetica Neue LT Pro'; src:url('fonts/HelveticaNeueLTProMd.otf') format('opentype'); font-weight:500 600; font-style:normal; font-display:swap; }
@font-face { font-family:'Helvetica Neue LT Pro'; src:url('fonts/HelveticaNeueLTProHv.otf') format('opentype'); font-weight:700 900; font-style:normal; font-display:swap; }
@font-face { font-family:'Helvetica Neue LT Pro'; src:url('fonts/HelveticaNeueLTProIt.otf') format('opentype'); font-weight:300 400; font-style:italic; font-display:swap; }

:root {
  --paper:#F0EDEA; --ink:#1E1E1E; --terra:#D97757; --gold:#DDB651; --olive:#9CA76B; --lime:#DEEA9D;
  --paper-2:#E8E3DC; --paper-3:#DFD9D0; --paper-4:#D5CCBF;
  --ink-2:#2C2A26; --ink-soft:rgba(30,30,30,.62); --ink-faint:rgba(30,30,30,.42);
  --line:rgba(30,30,30,.13); --line-2:rgba(30,30,30,.07);
  --serif:'Benton Modern','Times New Roman',serif;
  --sans:'Helvetica Neue LT Pro','Helvetica Neue',Helvetica,Arial,sans-serif;
  --r-card:20px; --r-img:16px; --r-pill:999px;
  --sidebar-w:312px; --maxw:1040px;
}

/* ---- Reset ---- */
* { box-sizing:border-box; margin:0; padding:0; }
html { -webkit-text-size-adjust:100%; }
body { font-family:var(--sans); font-weight:400; color:var(--ink); background:var(--paper);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility; line-height:1.5; }
img { display:block; max-width:100%; }
a { color:inherit; text-decoration:none; }
button { font:inherit; cursor:pointer; }
h1,h2,h3,h4 { font-family:var(--serif); font-weight:400; line-height:1; }

/* ---- Tipografía utilitaria ---- */
.eyebrow { font-family:var(--sans); font-weight:500; font-size:13px; letter-spacing:0; color:var(--ink-soft); }
.eyebrow--terra { color:var(--terra); }
.eyebrow-row { display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.meta { font-family:var(--sans); font-weight:400; font-size:13px; color:var(--ink-soft); }
.meta-row { display:flex; flex-wrap:wrap; gap:14px; align-items:center; }
.ast { display:inline-block; vertical-align:middle; flex:0 0 auto; width:18px; height:18px; }

/* underline a mano (svg en background) */
.uline { position:relative; white-space:nowrap; }
.uline::after { content:''; position:absolute; left:0; right:0; bottom:-.12em; height:.34em;
  background:no-repeat center/100% 100%;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 14' preserveAspectRatio='none'%3E%3Cpath d='M3 8C40 4 80 11 120 6 150 3 175 9 197 5' fill='none' stroke='%23DDB651' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E"); }

/* ============================================================
   APP SHELL — sidebar fija + contenido
   ============================================================ */
.app { display:flex; min-height:100vh; }

.sidebar { width:var(--sidebar-w); flex:0 0 var(--sidebar-w); background:var(--paper-2);
  border-right:1px solid var(--line); padding:34px 28px; display:flex; flex-direction:column;
  position:sticky; top:0; height:100vh; overflow-y:auto; }
.sidebar__logo img { height:28px; width:auto; }
.sidebar__tag { font-family:var(--sans); font-weight:500; font-size:11.5px; letter-spacing:.02em;
  color:var(--ink-faint); margin-top:7px; }
.sidebar__search { position:relative; margin-top:26px; }
.sidebar__search input { width:100%; padding:11px 14px 11px 36px; border:1px solid var(--line);
  border-radius:var(--r-pill); background:var(--paper); font-family:var(--sans); font-size:13.5px; color:var(--ink); }
.sidebar__search input::placeholder { color:var(--ink-soft); }
.sidebar__search .sicon { position:absolute; left:14px; top:11px; opacity:.4; }
.sidebar__label { font-family:var(--sans); font-weight:500; font-size:13px; color:var(--ink-soft); margin:24px 2px 10px; }
.sidebar__label--sub { margin-top:22px; }

.nav { display:flex; flex-direction:column; gap:2px; }
.nav__item { display:flex; align-items:center; gap:13px; padding:10px 14px; border-radius:var(--r-pill);
  color:var(--ink); transition:background .12s; }
.nav__item:hover { background:rgba(0,0,0,.04); }
.nav__item.is-active { background:var(--paper); box-shadow:inset 0 0 0 1px var(--line); }
.nav__num { font-family:var(--sans); font-weight:500; font-size:12px; color:var(--ink-faint); width:20px; flex:0 0 20px; }
.nav__name { flex:1; font-size:14.5px; }
.nav__item.is-active .nav__name { font-weight:600; }
.nav__item.is-locked { opacity:.55; }
.nav__check { width:18px; height:18px; flex:0 0 18px; display:flex; align-items:center; justify-content:center; }
.nav__check svg { width:14px; height:14px; }
.nav--sub .nav__name { font-size:13.5px; color:var(--ink-soft); }

.sidebar__progress { margin-top:auto; padding-top:22px; }
.sidebar__progress .pr-top { display:flex; justify-content:space-between; font-size:12.5px; color:var(--ink-soft); margin-bottom:8px; }
.sidebar__progress .pr-top b { font-weight:500; color:var(--ink); }
.bar { height:6px; border-radius:6px; background:var(--paper-4); overflow:hidden; }
.bar > i { display:block; height:100%; background:var(--olive); width:0; transition:width .4s; }

/* contenido */
.main { flex:1; min-width:0; display:flex; flex-direction:column; }
.content { width:100%; max-width:var(--maxw); margin:0 auto; padding:32px 56px 64px; }

.topbar { display:flex; justify-content:space-between; align-items:center; gap:16px;
  max-width:var(--maxw); margin:0 auto; width:100%; padding:24px 56px 0; }
.topbar .crumb { font-size:13px; color:var(--ink-soft); }
.topbar .crumb b { font-weight:500; color:var(--ink); }
.who { display:flex; align-items:center; gap:12px; font-size:13.5px; color:var(--ink-soft); }
.avatar { width:34px; height:34px; border-radius:50%; background:var(--terra); color:var(--paper);
  display:flex; align-items:center; justify-content:center; font-weight:700; font-size:14px; }

/* ============================================================
   BOTONES
   ============================================================ */
.btn { display:inline-flex; align-items:center; gap:9px; padding:11px 22px; border-radius:var(--r-pill);
  border:1px solid var(--ink); background:transparent; color:var(--ink); font-weight:500; font-size:14px;
  transition:background .15s,color .15s; }
.btn:hover { background:rgba(0,0,0,.05); }
.btn--dark { background:var(--ink); color:var(--paper); }
.btn--dark:hover { background:#000; }
.btn--block { width:100%; justify-content:center; }
.btn--ghost { border-color:var(--line); }

/* ============================================================
   HERO (home)
   ============================================================ */
.hero { margin-bottom:30px; }
.hero h1 { font-size:72px; line-height:.98; max-width:13ch; }
.hero p { font-size:16px; color:var(--ink-soft); max-width:60ch; margin-top:18px; }

/* tarjeta continuar */
.continue { display:flex; gap:22px; align-items:center; background:var(--paper-2); border:1px solid var(--line);
  border-radius:var(--r-card); padding:18px; margin-bottom:34px; }
.continue__thumb { width:184px; flex:0 0 184px; height:120px; }
.continue__body { flex:1; min-width:0; }
.continue__body h3 { font-size:32px; margin-top:4px; }
.continue__progress { display:flex; align-items:center; gap:14px; margin-top:12px; }
.continue__progress .bar { flex:1; max-width:320px; }
.continue__progress .bar > i { background:var(--terra); }

/* ============================================================
   GRILLA DE MÓDULOS (home)
   ============================================================ */
.section-label { font-family:var(--sans); font-weight:500; font-size:13px; color:var(--ink-soft); margin:30px 0 14px; }
.ph { background:repeating-linear-gradient(135deg,var(--paper-4),var(--paper-4) 9px,rgba(0,0,0,.04) 9px,rgba(0,0,0,.04) 18px); border-radius:var(--r-img); }

/* lista de lecciones (módulos índice) */
.lessons-list { max-width:72ch; border:1px solid var(--line); border-radius:14px; overflow:hidden; margin:8px 0; }
.ll-item { display:flex; align-items:center; gap:14px; padding:15px 20px; border-bottom:1px solid var(--line-2); }
.ll-item:last-child { border-bottom:0; }
.ll-n { font-family:var(--sans); font-weight:500; font-size:13px; color:var(--ink-faint); width:22px; flex:0 0 22px; }
.ll-t { flex:1; font-size:15px; color:var(--ink); }
.ll-tag { font-size:11.5px; color:var(--ink-soft); background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-pill); padding:3px 10px; white-space:nowrap; }

.grid { display:grid; gap:18px; }
.grid--3 { grid-template-columns:repeat(3,1fr); }
.grid--2 { grid-template-columns:repeat(2,1fr); }

.mcard { background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-card); overflow:hidden;
  display:flex; flex-direction:column; transition:transform .15s, box-shadow .15s; }
.mcard:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.07); }
.mcard__thumb { height:96px; margin:10px 10px 0; }
.mcard__body { padding:14px 18px 18px; flex:1; display:flex; flex-direction:column; }
.mcard__top { display:flex; align-items:center; gap:9px; margin-bottom:6px; }
.mcard__num { font-family:var(--sans); font-weight:500; font-size:12.5px; color:var(--ink-soft); }
.mcard__title { font-size:24px; line-height:1.05; }
.mcard__desc { font-size:13px; color:var(--ink-soft); margin-top:7px; line-height:1.45; }
.mcard__foot { margin-top:12px; padding-top:12px; border-top:1px solid var(--line-2); font-size:12.5px; color:var(--ink-soft);
  display:flex; align-items:center; gap:8px; }
.mcard__done { color:var(--olive); }

/* tarjetas de recurso (más chicas) */
.rcard { background:transparent; border:1px solid var(--line); border-radius:var(--r-card); padding:18px 20px;
  display:flex; flex-direction:column; gap:6px; transition:background .15s; }
.rcard:hover { background:var(--paper-2); }
.rcard h3 { font-size:21px; }
.rcard p { font-size:13px; color:var(--ink-soft); line-height:1.45; }

/* ============================================================
   PÁGINA DE MÓDULO — encabezado + barra de lecciones
   ============================================================ */
.mhead { padding:8px 0 24px; }
.mhead__row { display:flex; align-items:center; gap:24px; }
.mhead__num { font-family:var(--serif); font-size:84px; line-height:.9; }
.mhead h1 { font-size:54px; line-height:.96; }
.mhead__desc { font-size:15px; color:var(--ink-soft); margin-top:7px; max-width:64ch; }
.mhead .meta-row { margin-top:18px; }
.mhead .meta-row .cur { color:var(--terra); font-weight:500; }

.lessons { display:flex; border-bottom:1px solid var(--line); margin:0 -56px 0; padding:0 56px;
  overflow-x:auto; }
.lesson-tab { flex:1; min-width:max-content; display:flex; align-items:center; justify-content:center; gap:8px;
  padding:15px 14px; margin-bottom:-1px; background:transparent; border:0; border-bottom:2px solid transparent;
  white-space:nowrap; color:var(--ink-soft); font-size:14px; cursor:pointer; transition:color .12s,border-color .12s; }
.lesson-tab:hover { color:var(--ink); }
.lesson-tab .ln { font-family:var(--sans); font-weight:500; font-size:12px; color:var(--ink-faint); }
.lesson-tab.is-active { border-bottom-color:var(--terra); color:var(--ink); }
.lesson-tab.is-active .ln { color:var(--terra); font-weight:600; }
.lesson-tab.is-active span:last-child { font-weight:500; }

/* layout cuerpo módulo: contenido + rail */
.mbody { display:flex; flex-direction:column; gap:0; }
.mbody__main { flex:1; min-width:0; padding:30px 0; }
.rail { border-top:1px solid var(--line); margin-top:8px; padding:24px 0 36px; }
@media (min-width:1200px) {
  .mbody { flex-direction:row; }
  .mbody__main.has-rail { padding-right:48px; }
  .rail { width:300px; flex:0 0 300px; border-top:0; border-left:1px solid var(--line); background:var(--paper-2);
    margin:0 -56px 0 0; padding:30px 26px 40px; align-self:stretch; }
}
.rail__label { font-family:var(--sans); font-weight:500; font-size:13px; color:var(--ink-soft); margin:0 0 14px; }
.rail__label + .rail__label, .rail .btn + .rail__label { margin-top:28px; }
.rail__res { display:flex; align-items:center; gap:10px; padding:11px 0; border-bottom:1px solid var(--line-2);
  font-size:13.5px; color:var(--ink-2); }
.rail__res .ast { width:13px; height:13px; }
.rail__res .dl { margin-left:auto; color:var(--ink-faint); }

/* ============================================================
   BLOQUES DE CONTENIDO
   ============================================================ */
.block { max-width:72ch; }
.lesson-kicker { display:flex; align-items:center; gap:9px; margin-bottom:10px; }
.prose h2 { font-size:34px; margin:34px 0 6px; }
.prose h2:first-child { margin-top:0; }
.prose h3 { font-family:var(--sans); font-weight:600; font-size:15.5px; line-height:1.4; margin:26px 0 4px; }
.prose p { font-size:15.5px; line-height:1.65; color:var(--ink-2); margin:10px 0; max-width:72ch; }
.prose ul, .prose ol { margin:12px 0 12px 2px; padding-left:20px; }
.prose li { font-size:15px; line-height:1.6; color:var(--ink-2); margin:6px 0; }
.prose strong { font-weight:600; }
.prose a.inline { color:var(--terra); border-bottom:1px solid rgba(217,119,87,.4); }
.divider { height:1px; background:var(--line); border:0; margin:34px 0; max-width:72ch; }

/* video */
.video-block { max-width:72ch; margin:18px 0 44px; }
.video-frame { position:relative; aspect-ratio:16/9; border-radius:var(--r-img); overflow:hidden;
  background:repeating-linear-gradient(135deg,var(--paper-3),var(--paper-3) 10px,rgba(0,0,0,.035) 10px,rgba(0,0,0,.035) 20px);
  border:1px solid var(--line); display:flex; align-items:center; justify-content:center; }
.video-frame iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
.video-frame:has(iframe) { aspect-ratio:1512/982; background:var(--ink); border:0; }
.video-ph { display:flex; flex-direction:column; align-items:center; gap:10px; color:var(--ink-soft); }
.video-ph .play { width:62px; height:62px; border-radius:50%; background:var(--ink); color:var(--paper);
  display:flex; align-items:center; justify-content:center; font-size:22px; padding-left:4px; }
.video-ph .lbl { font-size:12px; }

/* imagen / screenshot placeholder */
.shot { border-radius:var(--r-img); border:1px solid var(--line); overflow:hidden; margin:16px 0; max-width:72ch;
  background:repeating-linear-gradient(135deg,var(--paper-3),var(--paper-3) 9px,rgba(0,0,0,.035) 9px,rgba(0,0,0,.035) 18px);
  display:flex; align-items:center; justify-content:center; min-height:200px; }
.shot span { font-size:11px; color:var(--ink-soft); background:var(--paper); padding:4px 10px; border-radius:var(--r-pill); border:1px solid var(--line); }

/* referencia de bloques con botón que abre la captura (lightbox) */
.blockref { max-width:72ch; display:flex; flex-direction:column; gap:5px; margin:14px 0; }
.blockref__item { display:flex; align-items:center; gap:14px; width:100%; text-align:left; background:transparent;
  border:1px solid var(--line); border-radius:12px; padding:9px 14px 9px 9px; cursor:pointer; transition:background .12s,border-color .12s; }
.blockref__item:hover { background:var(--paper-2); border-color:rgba(30,30,30,.22); }
.blockref__thumb { width:56px; height:44px; flex:0 0 56px; border-radius:8px; position:relative; overflow:hidden; }
.blockref__thumb .z { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; color:var(--ink);
  background:rgba(30,30,30,.05); font-size:15px; transition:background .12s; }
.blockref__item:hover .blockref__thumb .z { background:rgba(30,30,30,.1); }
.blockref__txt { font-size:15px; line-height:1.45; color:var(--ink-2); }
.blockref__txt b { font-weight:600; color:var(--ink); }

/* pasos con foto integrada (explicación + captura en el mismo bloque) */
.steps { max-width:72ch; display:flex; flex-direction:column; gap:14px; margin:18px 0; }
.step-item { display:flex; gap:16px; align-items:center; background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-card); padding:16px 18px; }
.step-item__n { flex:0 0 auto; width:24px; color:var(--terra); font-family:var(--sans); font-weight:600; font-size:15px; text-align:center; align-self:center; }
.step-item__body { flex:1; min-width:0; }
.step-item__body p { font-size:15px; line-height:1.55; color:var(--ink-2); margin:0; }
.step-item__body b { font-weight:600; color:var(--ink); }
.step-item__shot { flex:0 0 210px; width:210px; aspect-ratio:16/10; border-radius:11px; overflow:hidden; border:1px solid var(--line);
  cursor:pointer; position:relative; background-size:cover; background-position:center top; padding:0; transition:transform .12s; }
.step-item__shot:hover { transform:scale(1.02); }
.step-item__shot .z { position:absolute; right:8px; bottom:8px; width:26px; height:26px; border-radius:7px; background:rgba(30,30,30,.62);
  color:var(--paper); display:flex; align-items:center; justify-content:center; font-size:13px; }
@media (max-width:680px){
  .step-item { flex-wrap:wrap; }
  .step-item__shot { flex:1 1 100%; width:100%; aspect-ratio:16/9; margin-left:40px; }
}

/* lightbox */
.lightbox { position:fixed; inset:0; z-index:100; display:none; align-items:center; justify-content:center;
  padding:6vh 5vw; background:rgba(25,22,19,.8); }
.lightbox.is-open { display:flex; }
.lightbox__box { max-width:1000px; width:100%; }
.lightbox__media { width:100%; min-height:340px; border-radius:14px; overflow:hidden; display:flex; align-items:center; justify-content:center;
  background:repeating-linear-gradient(135deg,var(--paper-3),var(--paper-3) 11px,rgba(0,0,0,.04) 11px,rgba(0,0,0,.04) 22px); }
.lightbox__media img { width:100%; height:auto; display:block; }
.lightbox__media .phlabel { font-size:12px; color:var(--ink-soft); background:var(--paper); padding:6px 14px; border-radius:var(--r-pill); border:1px solid var(--line); }
.lightbox__cap { color:var(--paper); font-family:var(--sans); font-size:14px; margin-top:14px; }
.lightbox__close { position:fixed; top:20px; right:24px; width:42px; height:42px; border-radius:50%; cursor:pointer;
  background:rgba(240,237,234,.16); color:var(--paper); border:0; font-size:22px; line-height:1; display:flex; align-items:center; justify-content:center; }
.lightbox__close:hover { background:rgba(240,237,234,.28); }

/* battle cards */
.battle { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:22px 0; max-width:72ch; }
.bcard { background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-card); padding:18px 20px; }
.bcard__h { display:flex; align-items:center; gap:9px; margin-bottom:9px; }
.bcard__h .ast { width:15px; height:15px; }
.bcard__h h4 { font-family:var(--sans); font-weight:700; font-size:18px; line-height:1.2; }
.bcard p { font-size:13.5px; line-height:1.5; color:var(--ink-soft); }
.bcard ul { list-style:none; margin-top:10px; }
.bcard li { display:flex; gap:8px; font-size:13.5px; color:var(--ink-2); padding:4px 0; }

/* battle cards de objeciones (objeción + respuesta + tip) */
.objgrid { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:18px 0; max-width:72ch; }
.obj { background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-card); padding:20px 22px; display:flex; flex-direction:column; }
.obj__q { display:flex; gap:11px; align-items:flex-start; margin-bottom:12px; }
.obj__q .ast { width:16px; height:16px; margin-top:4px; }
.obj__q h4 { font-family:var(--serif); font-size:23px; line-height:1.05; }
.obj__r { font-size:14px; line-height:1.55; color:var(--ink-2); }
.obj__tip { margin-top:14px; padding-top:13px; border-top:1px solid var(--line); font-size:13px; line-height:1.5; color:var(--ink-soft); }
.obj__tip b { font-weight:600; color:var(--ink-2); }
@media (max-width:760px){ .objgrid { grid-template-columns:1fr; } }

/* callouts */
.callout { display:flex; gap:14px; padding:16px 20px; border-radius:14px; margin:18px 0; max-width:72ch; }
.callout .cico { flex:0 0 auto; font-size:18px; line-height:1.4; }
.callout p { font-size:14px; line-height:1.55; color:var(--ink-2); margin:0; }
.callout--tip { background:var(--lime); }
.callout--warn { background:#F6E3D8; box-shadow:inset 3px 0 0 var(--terra); }
.callout--note { background:var(--paper-2); box-shadow:inset 3px 0 0 var(--gold); }
.callout h4 { font-family:var(--sans); font-weight:600; font-size:15px; line-height:1.3; margin-bottom:3px; }

/* script de venta (cita) */
.script { border-left:3px solid var(--terra); background:var(--paper-2); border-radius:0 12px 12px 0;
  padding:16px 20px; margin:18px 0; max-width:72ch; font-style:italic; font-size:15px; color:var(--ink-2); line-height:1.6; }

/* tablas */
.tbl-wrap { max-width:72ch; margin:18px 0; border:1px solid var(--line); border-radius:14px; overflow:hidden; }
table { width:100%; border-collapse:collapse; }
thead th { background:var(--paper-2); text-align:left; font-family:var(--sans); font-weight:500; font-size:12.5px;
  letter-spacing:0; color:var(--ink-soft); padding:12px 18px; border-bottom:1px solid var(--line); }
tbody td { padding:13px 18px; font-size:14px; color:var(--ink-2); border-bottom:1px solid var(--line-2); vertical-align:top; }
tbody tr:last-child td { border-bottom:0; }
tbody td:first-child { font-weight:500; color:var(--ink); }

/* flujo por pasos */
.flow { display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin:18px 0; max-width:72ch; }
.flow .step { background:var(--paper-2); border:1px solid var(--line); border-radius:var(--r-pill);
  padding:9px 16px; font-size:13.5px; color:var(--ink-2); }
.flow .arrow { color:var(--ink-faint); }

/* checklist interactivo */
.checklist { max-width:72ch; margin:44px 0 18px; border:1px solid var(--line); border-radius:16px; overflow:hidden; }
.checklist__head { display:flex; align-items:center; gap:10px; padding:15px 20px; background:var(--paper-2); border-bottom:1px solid var(--line); }
.checklist__head h3 { font-size:20px; }
.check { display:flex; align-items:center; gap:12px; padding:13px 20px; border-bottom:1px solid var(--line-2); cursor:pointer; }
.check:last-child { border-bottom:0; }
.check__box { width:20px; height:20px; flex:0 0 20px; border-radius:6px; border:1.5px solid var(--line);
  display:flex; align-items:center; justify-content:center; color:var(--paper); font-size:13px; transition:background .12s,border-color .12s; }
.check.is-done .check__box { background:var(--olive); border-color:var(--olive); }
.check__txt { font-size:14.5px; color:var(--ink-2); }
.check.is-done .check__txt { color:var(--ink-faint); text-decoration:line-through; }

/* acordeón (FAQ / desplegables) */
.acc { max-width:72ch; margin:14px 0; border:1px solid var(--line); border-radius:14px; overflow:hidden; }
.acc__item + .acc__item { border-top:1px solid var(--line-2); }
.acc__q { width:100%; display:flex; justify-content:space-between; align-items:center; gap:16px; text-align:left;
  padding:16px 20px; background:transparent; font-family:var(--sans); font-weight:600; font-size:16px; color:var(--ink); }
.acc__q .chev { transition:transform .2s; color:var(--ink-soft); flex:0 0 auto; }
.acc__item.is-open .acc__q .chev { transform:rotate(180deg); }
.acc__a { max-height:0; overflow:hidden; transition:max-height .25s ease; }
.acc__a-inner { padding:0 20px 18px; font-size:14.5px; line-height:1.6; color:var(--ink-2); }

/* navegación entre lecciones / módulos */
.pager { display:flex; gap:12px; margin-top:34px; max-width:72ch; }
.pager .btn:last-child { margin-left:auto; }

/* enlaces de ejemplo / externos */
.linklist { list-style:none; margin:14px 0; max-width:72ch; }
.linklist li { padding:12px 0; border-bottom:1px solid var(--line-2); }
.linklist a { display:flex; align-items:center; gap:10px; font-size:14.5px; }
.linklist a .ast { width:13px; height:13px; }
.linklist .sub { font-size:13px; color:var(--ink-soft); margin-top:2px; padding-left:23px; }

/* ============================================================
   BUSCADOR (overlay)
   ============================================================ */
.search-pop { position:absolute; top:calc(100% + 8px); left:0; right:0; background:var(--paper);
  border:1px solid var(--line); border-radius:14px; box-shadow:0 12px 40px rgba(0,0,0,.14); padding:6px; z-index:30; display:none; max-height:60vh; overflow:auto; }
.search-pop.is-open { display:block; }
.search-pop a { display:block; padding:10px 12px; border-radius:9px; font-size:13.5px; }
.search-pop a:hover, .search-pop a.is-cursor { background:var(--paper-2); }
.search-pop a .s-mod { font-size:11px; color:var(--ink-soft); display:block; }
.search-pop .empty { padding:14px 12px; font-size:13px; color:var(--ink-soft); }

/* ============================================================
   MENÚ MÓVIL
   ============================================================ */
.topbar__menu { display:none; }
.scrim { display:none; }

@media (max-width:1080px) {
  .battle, .grid--3 { grid-template-columns:1fr 1fr; }
}
@media (max-width:900px) {
  .sidebar { position:fixed; left:0; top:0; z-index:50; transform:translateX(-100%); transition:transform .25s; box-shadow:0 0 40px rgba(0,0,0,.15); }
  body.nav-open .sidebar { transform:translateX(0); }
  body.nav-open .scrim { display:block; position:fixed; inset:0; background:rgba(0,0,0,.3); z-index:40; }
  .topbar__menu { display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:10px; border:1px solid var(--line); background:var(--paper); }
  .topbar, .content { padding-left:24px; padding-right:24px; }
  .lessons { margin-left:-24px; margin-right:-24px; padding-left:24px; padding-right:24px; }
  .rail { margin-right:-24px; }
  .hero h1 { font-size:54px; }
  .mhead__num { font-size:64px; }
  .mhead h1 { font-size:42px; }
}
@media (max-width:680px) {
  .grid--3, .grid--2, .battle { grid-template-columns:1fr; }
  .continue { flex-direction:column; align-items:stretch; }
  .continue__thumb { width:100%; flex:none; }
  .hero h1 { font-size:44px; }
}