/* ============================================================
   Cognito Solutions — hoja de estilo del sitio

   TEMAS
   -----
   Todos los colores viven en variables. El tema oscuro es el
   default (:root). El claro se aplica de dos formas:

     1. :root[data-theme="light"]  → elección explícita del usuario
        (la escribe el script inline del <head> desde localStorage).
     2. @media (prefers-color-scheme: light) → fallback sin JS.

   Si tocas la paleta clara, tócala en LOS DOS bloques.
   ============================================================ */

  :root{
    color-scheme:dark;

    /* --- superficies --- */
    --bg:            var(--cs-carbon);   /* #0f0f10 */
    --bg-elev:       #17181c;            /* tarjetas y paneles elevados */
    --hover-tint:    rgba(255,255,255,.035);

    /* --- líneas --- */
    --line:          var(--cs-line);     /* divisores estructurales */
    --line-bright:   #2f3542;            /* divisores con más peso */
    --control-border:#5e6574;            /* borde de controles: 3.3:1 sobre --bg, 3.0:1 sobre --bg-elev (WCAG 1.4.11) */

    /* --- tinta --- */
    --ink:           var(--cs-ink);      /* 17.7:1 sobre --bg */
    --ink-dim:       var(--cs-gray);     /*  7.5:1 sobre --bg */
    --ink-faint:     #7d8593;            /*  5.2:1 sobre --bg */

    /* --- acento --- */
    --signal:        var(--cs-signal);
    --signal-hover:  #6ef0a0;
    --signal-soft:   var(--cs-halo);     /* fondo teñido de verde */
    --on-signal:     #04130a;            /* tinta sobre superficie verde */
    --signal-glow:   rgba(74,222,128,.55);
    --focus-ring:    rgba(74,222,128,.22);
    --em-from:       var(--cs-signal);
    --em-to:         #a3f5c4;

    /* --- estados --- */
    --danger:        #ef4444;
    --danger-ink:    #f87171;
    --danger-soft:   #1f0a0a;
    --danger-ring:   rgba(239,68,68,.16);

    /* --- cromo --- */
    --nav-bg:        rgba(15,15,16,.72);
    --grid-line:     var(--cs-line);
    --grid-opacity:  .5;
    --shadow-card:   0 24px 60px -34px rgba(0,0,0,.7);
    --select-arrow:  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath stroke='%239aa0ab' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");

    /* --- terminal ---
       La terminal es una consola: se queda oscura en ambos temas
       (solo cambian su sombra y su borde para asentarla en claro). */
    --term-bg:       #111216;
    --term-border:   #262a33;
    --term-ink:      var(--cs-ink);
    --term-dim:      var(--cs-gray);
    --term-faint:    #7d8593;
    --term-dot:      #333947;
    --term-signal:   var(--cs-signal);
    --term-tag:      color-mix(in srgb, var(--cs-signal) 62%, var(--term-bg));
    --term-shadow:   0 40px 80px -40px rgba(0,0,0,.8);

    /* --- tipografía --- */
    --display:'Space Grotesk',system-ui,sans-serif;
    --mono:'JetBrains Mono',ui-monospace,monospace;
    --body:'Inter',system-ui,sans-serif;
  }

  /* ---------- tema claro: fallback del sistema (sin JS) ---------- */
  @media (prefers-color-scheme: light){
    :root:not([data-theme="dark"]){
      color-scheme:light;

      --bg:            var(--cs-paper);  /* #f3f5f4 */
      --bg-elev:       #ffffff;
      --hover-tint:    rgba(15,23,20,.045);

      --line:          #e0e4e2;
      --line-bright:   #ccd2cf;
      --control-border:#868d99;          /* 3.1:1 sobre --bg */

      --ink:           var(--cs-ink-deep);   /* 17.0:1 sobre --bg */
      --ink-dim:       var(--cs-gray-deep);  /*  6.9:1 sobre --bg */
      --ink-faint:     #646b78;              /*  4.9:1 sobre --bg */

      --signal:        var(--cs-signal-strong); /* 4.6:1 sobre --bg */
      --signal-hover:  #166534;
      --signal-soft:   var(--cs-halo-light);
      --on-signal:     #ffffff;              /* 5.0:1 sobre --signal */
      --signal-glow:   rgba(21,128,61,.34);
      --focus-ring:    rgba(21,128,61,.20);
      --em-from:       var(--cs-signal-strong);
      --em-to:         #2f9e5a;              /* 3.1:1 — solo texto grande */

      --danger:        #dc2626;
      --danger-ink:    #b91c1c;
      --danger-soft:   #fef2f2;
      --danger-ring:   rgba(220,38,38,.14);

      --nav-bg:        rgba(243,245,244,.80);
      --grid-line:     #dbe0dd;
      --grid-opacity:  .9;
      --shadow-card:   0 18px 44px -28px rgba(15,23,20,.22);
      --select-arrow:  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath stroke='%23646b78' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");

      --term-border:   #2a2e37;
      --term-shadow:   0 30px 60px -30px rgba(15,23,20,.34);
    }
  }

  /* ---------- tema claro: elección explícita ---------- */
  :root[data-theme="light"]{
    color-scheme:light;

    --bg:            var(--cs-paper);
    --bg-elev:       #ffffff;
    --hover-tint:    rgba(15,23,20,.045);

    --line:          #e0e4e2;
    --line-bright:   #ccd2cf;
    --control-border:#868d99;

    --ink:           var(--cs-ink-deep);
    --ink-dim:       var(--cs-gray-deep);
    --ink-faint:     #646b78;

    --signal:        var(--cs-signal-strong);
    --signal-hover:  #166534;
    --signal-soft:   var(--cs-halo-light);
    --on-signal:     #ffffff;
    --signal-glow:   rgba(21,128,61,.34);
    --focus-ring:    rgba(21,128,61,.20);
    --em-from:       var(--cs-signal-strong);
    --em-to:         #2f9e5a;

    --danger:        #dc2626;
    --danger-ink:    #b91c1c;
    --danger-soft:   #fef2f2;
    --danger-ring:   rgba(220,38,38,.14);

    --nav-bg:        rgba(243,245,244,.80);
    --grid-line:     #dbe0dd;
    --grid-opacity:  .9;
    --shadow-card:   0 18px 44px -28px rgba(15,23,20,.22);
    --select-arrow:  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath stroke='%23646b78' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");

    --term-border:   #2a2e37;
    --term-shadow:   0 30px 60px -30px rgba(15,23,20,.34);
  }

  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    background:var(--bg);color:var(--ink);font-family:var(--body);
    font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  }
  ::selection{background:var(--signal);color:var(--on-signal)}
  a{color:inherit;text-decoration:none}

  .wrap{max-width:1180px;margin:0 auto;padding:0 28px}

  /* ---------- ambient grid ---------- */
  .grid-bg{
    position:fixed;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(var(--grid-line) 1px,transparent 1px),
      linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
    background-size:64px 64px;
    -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 0%,transparent 75%);
    mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 0%,transparent 75%);
    opacity:var(--grid-opacity);
  }

  /* ---------- nav ---------- */
  nav{
    position:fixed;top:0;left:0;right:0;z-index:50;
    backdrop-filter:blur(12px);background:var(--nav-bg);
    border-bottom:1px solid transparent;transition:border-color .3s;
  }
  nav.scrolled{border-bottom-color:var(--line)}
  .nav-in{display:flex;align-items:center;gap:22px;height:68px}
  .brand{margin-right:auto;display:flex;align-items:center;gap:11px;white-space:nowrap;font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:-.01em}
  .brand-mark{height:24px;width:auto;display:block}
  /* El isotipo viene en dos versiones (halo oscuro / halo claro). Se muestra
     la que corresponde al tema activo; sin JS gana la del sistema. */
  :root[data-theme="light"] .mark-dark{display:none}
  :root:not([data-theme="light"]) .mark-light{display:none}
  .nav-links{display:flex;align-items:center;gap:34px}
  .nav-links a{font-size:14px;color:var(--ink-dim);transition:color .2s}
  .nav-links a:hover{color:var(--ink)}
  .nav-cta{font-family:var(--mono);font-size:13px;color:var(--signal)!important;border:1px solid var(--control-border);padding:8px 16px;border-radius:7px;transition:all .2s}
  .nav-cta:hover{border-color:var(--signal);background:var(--signal-soft)}
  .nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}

  /* ---------- toggle de tema ----------
     Oculto por defecto: el script inline del <head> añade .js al <html>,
     así no mostramos un control muerto si el usuario no tiene JS. */
  .theme-toggle{
    display:none;position:relative;flex-shrink:0;
    width:36px;height:36px;align-items:center;justify-content:center;
    background:none;border:1px solid var(--control-border);border-radius:9px;
    color:var(--ink-dim);cursor:pointer;
    transition:color .2s,border-color .2s,background .2s;
  }
  :root.js .theme-toggle{display:inline-flex}
  .theme-toggle:hover{color:var(--signal);border-color:var(--signal);background:var(--signal-soft)}
  .theme-toggle:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
  .theme-toggle .ico{
    position:absolute;display:block;
    transition:opacity .25s ease,transform .4s cubic-bezier(.2,.6,.2,1);
  }
  :root[data-theme="light"] .theme-toggle .ico-sun{opacity:0;transform:rotate(-90deg) scale(.5)}
  :root:not([data-theme="light"]) .theme-toggle .ico-moon{opacity:0;transform:rotate(90deg) scale(.5)}

  .menu-btn{
    display:none;align-items:center;height:36px;padding:0 12px;
    background:none;border:1px solid var(--control-border);border-radius:9px;
    color:var(--ink);cursor:pointer;font-family:var(--mono);font-size:12.5px;
    transition:color .2s,border-color .2s;
  }
  .menu-btn:hover{border-color:var(--signal);color:var(--signal)}
  .menu-btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

  /* ---------- hero ---------- */
  header{position:relative;z-index:1;padding:172px 0 110px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);
    font-size:12.5px;color:var(--ink-dim);border:1px solid var(--line-bright);
    border-radius:30px;padding:6px 14px;margin-bottom:30px;letter-spacing:.02em;
  }
  .eyebrow b{color:var(--signal);font-weight:500}
  h1{
    font-family:var(--display);font-weight:700;letter-spacing:-.035em;
    font-size:clamp(2.6rem,6.4vw,5rem);line-height:1.02;margin-bottom:26px;
  }
  h1 .em{
    background:linear-gradient(120deg,var(--em-from),var(--em-to));
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  }
  .lede{font-size:clamp(1.1rem,2vw,1.32rem);line-height:1.6;color:var(--ink-dim);max-width:640px;margin-bottom:40px}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
  .btn{
    font-family:var(--display);font-weight:600;font-size:15px;
    padding:14px 26px;border-radius:9px;cursor:pointer;transition:all .22s;border:1px solid transparent;
    display:inline-block;
  }
  .btn-primary{background:var(--signal);color:var(--on-signal)}
  .btn-primary:hover{background:var(--signal-hover);transform:translateY(-2px);box-shadow:0 12px 30px -12px var(--signal-glow)}
  .btn-primary:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
  .btn-ghost{border-color:var(--control-border);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--signal);color:var(--signal);background:var(--signal-soft)}
  .btn-ghost:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

  /* ---------- terminal signature ----------
     Consola oscura en los dos temas: es una captura de producto,
     no una superficie del tema. */
  .terminal{
    position:relative;z-index:1;margin-top:64px;
    background:var(--term-bg);border:1px solid var(--term-border);border-radius:13px;overflow:hidden;
    box-shadow:var(--term-shadow);
  }
  .term-bar{display:flex;align-items:center;gap:8px;padding:13px 16px;border-bottom:1px solid var(--term-border)}
  .term-bar .b{width:11px;height:11px;border-radius:50%;background:var(--term-dot)}
  .term-title{font-family:var(--mono);font-size:12px;color:var(--term-faint);margin-left:10px}
  .term-body{padding:22px 20px;font-family:var(--mono);font-size:13.5px;line-height:1.95;min-height:210px;color:var(--term-ink)}
  .ln{display:flex;gap:12px;white-space:pre-wrap}
  .ln .pf{color:var(--term-signal);user-select:none}
  .ln .cm{color:var(--term-ink)}
  .ln.out{color:var(--term-dim)}
  .ln.out .tag{color:var(--term-tag)}
  .ln.out .ok{color:var(--term-signal)}
  .cursor{display:inline-block;width:8px;height:16px;background:var(--term-signal);vertical-align:middle;animation:blink 1.1s step-end infinite}
  @keyframes blink{50%{opacity:0}}

  /* ---------- section frame ---------- */
  section{position:relative;z-index:1;padding:96px 0;border-top:1px solid var(--line)}
  .sec-head{margin-bottom:54px;max-width:680px}
  .sec-tag{font-family:var(--mono);font-size:12.5px;color:var(--signal);letter-spacing:.08em;text-transform:uppercase;margin-bottom:16px;display:block}
  h2{font-family:var(--display);font-weight:700;font-size:clamp(1.9rem,4vw,2.85rem);letter-spacing:-.03em;line-height:1.08}
  .sec-sub{color:var(--ink-dim);font-size:1.0625rem;line-height:1.6;margin-top:16px}

  /* ---------- services ---------- */
  .svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .svc{background:var(--bg);padding:34px 30px;transition:background .25s;position:relative}
  .svc:hover{background:var(--bg-elev)}
  .svc-no{font-family:var(--mono);font-size:12px;color:var(--ink-faint);margin-bottom:20px;display:block}
  .svc h3{font-family:var(--display);font-weight:600;font-size:1.32rem;letter-spacing:-.015em;margin-bottom:12px;display:flex;align-items:center;gap:10px}
  .svc h3 .ic{color:var(--signal)}
  .svc p{color:var(--ink-dim);font-size:1.0625rem;line-height:1.6}
  .svc .stack{margin-top:18px;display:flex;flex-wrap:wrap;gap:7px}
  .svc .stack span{font-family:var(--mono);font-size:11.5px;color:var(--ink-faint);border:1px solid var(--line-bright);padding:3px 9px;border-radius:5px}

  /* ---------- approach ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
  .step{padding-top:24px;border-top:2px solid var(--line-bright);position:relative}
  .step::before{content:counter(s,decimal-leading-zero);counter-increment:s;font-family:var(--mono);font-size:12px;color:var(--signal);position:absolute;top:-24px;left:0;background:var(--bg);padding-right:10px}
  .step h3{font-family:var(--display);font-weight:600;font-size:1.12rem;margin-bottom:9px;letter-spacing:-.01em}
  .step p{color:var(--ink-dim);font-size:1rem;line-height:1.6}

  /* ---------- proof / stats ---------- */
  .proof{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .stat{background:var(--bg);padding:38px 30px;text-align:left}
  .stat .n{font-family:var(--display);font-weight:700;font-size:2.6rem;letter-spacing:-.04em;line-height:1}
  .stat .n .u{color:var(--signal)}
  .stat .l{color:var(--ink-dim);font-size:1rem;line-height:1.6;margin-top:12px}

  /* ---------- cta band ---------- */
  .cta-band{text-align:center;padding:104px 0}
  .cta-band h2{margin-bottom:20px}
  .cta-band p{color:var(--ink-dim);font-size:1.1rem;line-height:1.6;max-width:540px;margin:0 auto 38px}

  /* ---------- contact ---------- */
  .contact-card{
    background:var(--bg-elev);border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--shadow-card);
    padding:48px;display:grid;grid-template-columns:1fr 1.45fr;gap:52px;align-items:start;
  }
  .contact-info h2{margin-bottom:14px}
  .contact-info>p{color:var(--ink-dim);margin-bottom:28px;font-size:1.0625rem;line-height:1.6}
  .contact-meta{display:flex;flex-direction:column;gap:12px}
  .contact-item{display:flex;align-items:center;gap:13px;font-family:var(--mono);font-size:14px;color:var(--ink);padding:14px 18px;border:1px solid var(--line-bright);border-radius:10px;transition:all .2s}
  .contact-item .ic{color:var(--signal);flex-shrink:0}
  a.contact-item:hover{border-color:var(--signal);background:var(--signal-soft)}
  a.contact-item:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
  .email-row{display:flex;align-items:center;gap:13px;font-family:var(--mono);font-size:14px;color:var(--ink);padding:14px 18px;border:1px solid var(--line-bright);border-radius:10px}
  .email-row .ic{color:var(--signal);flex-shrink:0}
  .email-text{flex:1;word-break:break-all}
  .copy-btn{
    flex-shrink:0;background:none;border:1px solid var(--control-border);border-radius:6px;
    padding:4px 10px;font-family:var(--mono);font-size:11px;color:var(--ink-faint);
    cursor:pointer;transition:all .2s;white-space:nowrap;line-height:1.4;
  }
  .copy-btn:hover{border-color:var(--signal);color:var(--signal)}
  .copy-btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
  .copy-btn.copied{border-color:var(--signal);color:var(--signal);background:var(--signal-soft)}

  /* ---------- contact form ---------- */
  .form-group{margin-bottom:18px}
  .form-group label{
    display:block;font-family:var(--mono);font-size:11.5px;color:var(--ink-dim);
    letter-spacing:.06em;margin-bottom:8px;text-transform:uppercase;
  }
  .form-input{
    width:100%;background:var(--bg);border:1px solid var(--control-border);border-radius:8px;
    padding:12px 14px;font-family:var(--body);font-size:15px;color:var(--ink);
    outline:none;transition:border-color .2s,box-shadow .2s;
  }
  .form-input:focus{border-color:var(--signal);box-shadow:0 0 0 3px var(--focus-ring)}
  .form-input::placeholder{color:var(--ink-faint)}
  .form-input:focus-visible{border-color:var(--signal);box-shadow:0 0 0 3px var(--focus-ring)}
  textarea.form-input{resize:vertical;min-height:120px;line-height:1.6}
  .form-input.invalid{border-color:var(--danger);box-shadow:0 0 0 3px var(--danger-ring)}
  .form-submit{width:100%;margin-top:4px;font-size:15px}
  .form-submit:disabled{opacity:.6;cursor:not-allowed;transform:none!important;box-shadow:none!important}
  .form-status{
    font-family:var(--mono);font-size:13px;line-height:1.55;padding:12px 16px;
    border-radius:8px;margin-bottom:16px;
  }
  .form-status.success{color:var(--signal);background:var(--signal-soft);border:1px solid var(--signal)}
  .form-status.error{color:var(--danger-ink);background:var(--danger-soft);border:1px solid var(--danger)}
  .form-status.sending{color:var(--ink-dim);background:var(--bg);border:1px solid var(--line-bright)}

  /* ---------- phone row ---------- */
  .tel-row{display:flex;gap:8px;align-items:stretch;flex-wrap:wrap}
  .form-select{
    flex:0 0 auto;
    appearance:none;-webkit-appearance:none;-moz-appearance:none;
    background:var(--bg) var(--select-arrow) no-repeat right 12px center;
    border:1px solid var(--control-border);border-radius:8px;
    padding:11px 34px 11px 14px;
    font-family:var(--mono);font-size:13px;color:var(--ink);
    outline:none;cursor:pointer;
    transition:border-color .2s,box-shadow .2s;
  }
  .form-select:focus,.form-select:focus-visible{border-color:var(--signal);box-shadow:0 0 0 3px var(--focus-ring)}
  .form-select option{background:var(--bg-elev);color:var(--ink)}
  .tel-row .form-input{flex:1 1 120px;min-width:0}

  /* ---------- footer ---------- */
  footer{position:relative;z-index:1;border-top:1px solid var(--line);padding:44px 0}
  .foot-in{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:18px}
  footer .brand{margin-right:0}
  footer .brand-mark{height:16px}
  .foot-in .c{font-family:var(--mono);font-size:12.5px;color:var(--ink-faint)}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.6,.2,1),transform .7s cubic-bezier(.2,.6,.2,1)}
  .reveal.in{opacity:1;transform:none}

  /* ---------- whatsapp float ---------- */
  .wa-float{
    position:fixed;bottom:28px;right:28px;z-index:100;
    width:56px;height:56px;border-radius:50%;
    background:#25D366;color:#fff;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 4px 20px rgba(37,211,102,.4);
    transition:transform .22s,box-shadow .22s;
    text-decoration:none;
  }
  .wa-float:hover{transform:scale(1.1);box-shadow:0 6px 30px rgba(37,211,102,.6)}
  .wa-float:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
  .wa-float svg{display:block;flex-shrink:0}

  @media(max-width:900px){
    .contact-card{grid-template-columns:1fr;gap:36px;padding:34px}
  }
  @media(max-width:860px){
    /* mobile nav panel */
    .nav-links{
      display:none;
      position:absolute;top:68px;left:0;right:0;
      flex-direction:column;align-items:stretch;gap:0;
      background:var(--bg-elev);border-bottom:1px solid var(--line);
      padding:4px 0 12px;
    }
    nav.nav-open .nav-links{display:flex}
    .nav-links a{
      font-size:15px;padding:15px 28px;
      color:var(--ink-dim);border-bottom:1px solid var(--line);
      transition:color .2s,background .2s;
    }
    .nav-links a:last-child{border-bottom:none}
    .nav-links a:hover{color:var(--ink);background:var(--hover-tint)}
    /* reset pill style for CTA inside the panel */
    .nav-links .nav-cta{
      border:none;border-radius:0;padding:15px 28px;
      background:none;font-size:15px;
    }
    .nav-links .nav-cta:hover{background:var(--signal-soft)}
    .menu-btn{display:inline-flex}
    .svc-grid,.proof{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr 1fr}
    header{padding:140px 0 80px}
  }
  @media(max-width:520px){
    .steps{grid-template-columns:1fr}
    .wrap{padding:0 20px}
    .term-body{font-size:12px}
    .contact-card{padding:24px}
    .email-row{flex-wrap:wrap;gap:10px}
    .email-text{width:100%}
    .nav-in{gap:12px}
  }
  /* Con el toggle en la barra, la marca y el boton de menu ya no caben a
     lo ancho de un movil estrecho: se comprimen en vez de recortarse. */
  @media(max-width:400px){
    .nav-in{gap:10px}
    .brand{font-size:15px;gap:9px}
    .brand-mark{height:21px}
    .menu-btn{padding:0 10px;font-size:12px}
    .theme-toggle{width:34px;height:34px}
    .menu-btn{height:34px}
  }

  /* ---------- transición al cambiar de tema ----------
     Se aplica solo durante ~250ms (theme.js pone y quita la clase),
     así el cambio no es un corte seco pero tampoco arrastra
     transiciones en el resto de la interacción. */
  :root.theme-switching,
  :root.theme-switching *,
  :root.theme-switching *::before,
  :root.theme-switching *::after{
    transition:background-color .25s ease,border-color .25s ease,color .25s ease,fill .25s ease,box-shadow .25s ease!important;
  }

  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
  }

  /* ---------- páginas secundarias (/boletin/) ---------- */
  .page{position:relative;z-index:1;padding:132px 0 92px}
  .page-head{max-width:720px;margin-bottom:46px}
  .page-head h1{
    font-family:var(--display);font-weight:700;letter-spacing:-.03em;
    font-size:clamp(2rem,4.4vw,3.05rem);line-height:1.08;margin-bottom:18px;
  }
  .page-date{
    font-family:var(--mono);font-size:12.5px;color:var(--signal);
    letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:15px;
  }
  .page-lede{color:var(--ink-dim);font-size:1.12rem;line-height:1.65;max-width:660px}
  .back{
    display:inline-flex;align-items:center;gap:8px;margin-top:34px;
    font-family:var(--mono);font-size:12.5px;color:var(--ink-dim);
    transition:color .2s,gap .2s;
  }
  .back:hover{color:var(--signal);gap:12px}
  .back:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:3px}

  /* ---------- texto corrido ---------- */
  .prose{max-width:680px}
  .prose p{color:var(--ink-dim);font-size:1.0625rem;line-height:1.7;margin-bottom:18px}
  .prose p:last-child{margin-bottom:0}
  .prose strong{color:var(--ink);font-weight:600}
  .prose ul,.prose ol{margin:0 0 18px 20px;color:var(--ink-dim);font-size:1.0625rem;line-height:1.7}
  .prose li{margin-bottom:7px}
  .prose a{
    color:var(--signal);text-decoration:underline;
    text-underline-offset:3px;text-decoration-thickness:1px;transition:color .2s;
  }
  .prose a:hover{color:var(--ink)}

  /* ---------- noticia del boletín ---------- */
  .news{padding:32px 0;border-top:1px solid var(--line);max-width:760px}
  .news-cat{
    font-family:var(--mono);font-size:11.5px;color:var(--ink-faint);
    letter-spacing:.08em;text-transform:uppercase;display:block;margin-bottom:11px;
  }
  .news-t{
    font-family:var(--display);font-weight:600;letter-spacing:-.02em;
    font-size:clamp(1.28rem,2.4vw,1.6rem);line-height:1.28;margin-bottom:12px;
  }
  .news-t a{transition:color .2s}
  .news-t a:hover{color:var(--signal)}
  .news-p{color:var(--ink-dim);font-size:1.0625rem;line-height:1.7;margin-bottom:14px}
  .news-src{
    display:inline-flex;align-items:center;gap:7px;
    font-family:var(--mono);font-size:12.5px;color:var(--signal);
    transition:gap .2s;
  }
  .news-src:hover{gap:11px}
  .news-note{
    max-width:760px;margin-top:38px;padding-top:24px;border-top:1px solid var(--line);
    font-size:.94rem;color:var(--ink-faint);line-height:1.7;
  }

  /* ---------- banner generativo del boletín ---------- */
  /* El SVG va inline y ya trae width="100%" y fill:var(--signal), asi que
     aqui solo se fija la altura, el margen y el display para que no quede
     el hueco de linea base de los elementos inline. */
  .bol-banner{width:100%;margin-bottom:38px}
  .bol-banner svg{display:block;width:100%;height:160px}

  /* ---------- índice de boletines ---------- */
  .bol-count{
    font-family:var(--mono);font-size:12.5px;color:var(--ink-faint);
    letter-spacing:.06em;display:block;margin-bottom:18px;
  }
  .bol-list{list-style:none;max-width:820px;border-top:1px solid var(--line)}
  .bol{border-bottom:1px solid var(--line);transition:background .25s}
  .bol:hover{background:var(--bg-elev)}
  .bol a{display:block;padding:26px 22px 26px 0}
  .bol-date{font-family:var(--mono);font-size:12px;color:var(--signal);letter-spacing:.06em;display:block;margin-bottom:9px}
  .bol-t{
    font-family:var(--display);font-weight:600;font-size:1.24rem;
    letter-spacing:-.015em;line-height:1.3;margin-bottom:8px;transition:color .2s;
  }
  .bol:hover .bol-t{color:var(--signal)}
  .bol-sub{
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    color:var(--ink-dim);font-size:1rem;line-height:1.6;
  }
  .bol-empty{color:var(--ink-dim);font-size:1.0625rem}

  @media(max-width:860px){
    .page{padding:108px 0 70px}
    .page-head{margin-bottom:34px}
    .bol-banner{margin-bottom:28px}
    .bol-banner svg{height:110px}
    .bol a{padding:22px 14px 22px 0}
  }
