/* ==========================================================
   Kizuna · Layout
   Barra de navegación, cinta de disciplinas y pie de página.
   Iguales en todas las páginas.
   ========================================================== */

/* ---- Navegación ---- */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:40;background:rgba(27,35,56,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h);gap:20px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;background:var(--gold);color:var(--navy);font:900 20px/1 var(--display);clip-path:polygon(50% 0,100% 25%,100% 75%,50% 100%,0 75%,0 25%)}
.brand-name{font:800 24px/1 var(--display);text-transform:uppercase;letter-spacing:.04em}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font:600 15px/1 var(--label);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;color:var(--cream);opacity:.85}
.nav-links a:hover,.nav-links a[aria-current="page"]{opacity:1;color:var(--gold)}
.nav-links a.btn{color:var(--navy);opacity:1}
.nav-links a.btn:hover{color:var(--navy)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--cream);font:600 14px/1 var(--label);letter-spacing:.14em;text-transform:uppercase;padding:10px 14px;cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:block}
  .nav-links{position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--navy);border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:18px var(--gutter);border-top:1px solid var(--line)}
  .nav-links .btn{margin:14px var(--gutter)}
}

/* ---- Cabecera de página interior (para páginas nuevas) ---- */
.page-head{border-bottom:1px solid var(--line);background:
  repeating-linear-gradient(115deg,transparent 0 46px,rgba(214,189,140,.035) 46px 48px),var(--navy)}
.page-head .wrap{padding-block:clamp(48px,7vw,90px) clamp(36px,5vw,60px)}
.page-head h1{font-size:clamp(56px,9vw,120px);font-weight:900;margin-top:18px}
.page-head p{max-width:48ch;color:var(--text-soft);margin-top:18px;font-size:clamp(17px,1.5vw,20px)}

/* ---- Cinta animada ---- */
.strip{border-block:1px solid var(--line);background:var(--ink);overflow:hidden}
.strip-inner{display:flex;gap:48px;white-space:nowrap;padding-block:22px;animation:strip-slide 38s linear infinite;width:max-content}
.strip-inner span{font:800 34px/1 var(--display);text-transform:uppercase;color:transparent;-webkit-text-stroke:1px var(--gold)}
.strip-inner span:nth-child(3n){color:var(--gold);-webkit-text-stroke:0}
@keyframes strip-slide{to{transform:translateX(-50%)}}

/* ---- Pie de página ---- */
footer{background:var(--ink);border-top:1px solid var(--line)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-block:64px 40px}
.foot h4{font:700 14px/1 var(--label);letter-spacing:.16em;text-transform:uppercase;color:var(--gold);margin:0 0 16px}
.foot p,.foot li{color:#b8b4aa;font-size:15px}
.foot ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.foot a{text-decoration:none}
.foot a:hover{color:var(--gold)}
.foot p + p{margin-top:10px}
.foot-big{font:900 clamp(40px,5vw,60px)/.9 var(--display);text-transform:uppercase;margin-bottom:16px}
.foot-base{border-top:1px solid var(--line);padding-block:20px;font:600 13px/1.4 var(--label);letter-spacing:.12em;text-transform:uppercase;color:var(--steel);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
@media (max-width:820px){.foot{grid-template-columns:1fr 1fr}}
@media (max-width:460px){.foot{grid-template-columns:1fr}}