/* ===========================================================
   Módulo de prueba documentada (home) — cartas de recomendación
   Usa los tokens de brb-v2.css: --paper --porcelain --ink --gold --slate --mist
   =========================================================== */
.proof-section{
  position:relative;
  padding:clamp(64px,9vw,118px) 0;
  background:var(--porcelain,#fcfcfa);
  border-top:1px solid var(--mist,#dfe4e8);
  border-bottom:1px solid var(--mist,#dfe4e8);
  overflow:hidden;
}
.proof-head{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:clamp(20px,4vw,64px);align-items:end;margin-bottom:clamp(30px,4vw,52px);
}
.proof-head h2{margin:14px 0 0;font-size:clamp(1.85rem,3.7vw,2.9rem);line-height:1.08;letter-spacing:-.02em;color:var(--ink,#071722)}
.proof-head h2 em{font-style:italic;color:var(--gold,#c2a258)}
.proof-head .proof-lede{margin:0;color:var(--slate,#52606d);font-size:clamp(.98rem,1.4vw,1.06rem);line-height:1.65}

.proof-rail{
  display:flex;gap:clamp(14px,1.6vw,22px);
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;margin:0 -4px;
  scrollbar-width:thin;scrollbar-color:var(--mist,#dfe4e8) transparent;
  -webkit-overflow-scrolling:touch;
}
.proof-rail::-webkit-scrollbar{height:5px}
.proof-rail::-webkit-scrollbar-thumb{background:var(--mist,#dfe4e8);border-radius:3px}
.proof-rail::-webkit-scrollbar-track{background:transparent}

.proof-card{
  flex:0 0 clamp(258px,25vw,320px);scroll-snap-align:start;
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--mist,#dfe4e8);border-radius:16px;overflow:hidden;
  text-decoration:none;color:inherit;
  transition:transform .5s var(--ease-heavy,cubic-bezier(.32,.72,0,1)),box-shadow .5s var(--ease-heavy,cubic-bezier(.32,.72,0,1)),border-color .5s ease;
}
.proof-card:hover,.proof-card:focus-visible{
  transform:translateY(-5px);
  border-color:rgba(194,162,88,.5);
  box-shadow:var(--shadow-soft,0 32px 80px rgba(7,23,34,.10));
}
.proof-shot{position:relative;height:172px;overflow:hidden;background:#f2f1ec;border-bottom:1px solid var(--mist,#dfe4e8)}
.proof-shot img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.proof-shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 46%,rgba(252,252,250,.96) 100%)}
.proof-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  font:600 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.13em;text-transform:uppercase;
  color:var(--ink,#071722);background:rgba(255,255,255,.93);border:1px solid var(--mist,#dfe4e8);
  padding:6px 9px;border-radius:999px;
}
.proof-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.proof-body blockquote{
  margin:0 0 16px;font-family:var(--editorial-serif,Georgia,serif);
  font-size:.99rem;line-height:1.48;color:var(--ink-2,#102a3a);
}
.proof-sign{margin-top:auto;padding-top:14px;border-top:1px solid var(--mist,#dfe4e8)}
.proof-sign strong{display:block;font-size:.86rem;font-weight:600;color:var(--ink,#071722)}
.proof-sign span{display:block;font-size:.76rem;color:var(--muted,#75818b);line-height:1.45}

.proof-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:clamp(12px,2vw,20px);padding-top:22px;border-top:1px solid var(--mist,#dfe4e8);
}
.proof-note{margin:0;font-size:.83rem;color:var(--muted,#75818b);max-width:56ch}

@media (max-width:860px){
  .proof-head{grid-template-columns:1fr;align-items:start;gap:16px}
}
@media (prefers-reduced-motion:reduce){
  .proof-card{transition:none}
  .proof-card:hover{transform:none}
}

/* --- Franja de acreditaciones --- */
.proof-creds{
  display:flex;flex-wrap:wrap;align-items:center;gap:clamp(16px,2.4vw,32px);
  margin-top:clamp(20px,3vw,32px);padding:clamp(18px,2.4vw,26px) clamp(18px,2.6vw,30px);
  background:var(--paper,#f4f3ef);border:1px solid var(--mist,#dfe4e8);border-radius:16px;
}
.proof-creds img{flex:0 0 auto;width:74px;height:auto;display:block;border-radius:8px}
.proof-cred-copy{flex:1 1 260px;min-width:0}
.proof-cred-copy strong{display:block;font-size:.98rem;font-weight:600;color:var(--ink,#071722);letter-spacing:-.01em}
.proof-cred-copy p{margin:5px 0 0;font-size:.85rem;line-height:1.55;color:var(--slate,#52606d)}
.proof-creds .text-link{flex:0 0 auto}
@media (max-width:640px){
  .proof-creds{flex-direction:column;align-items:flex-start;text-align:left}
}