:root{--ink:#151515;--red:#B40021;--grey:#6B6B6B;--line:#E2E2E2;--soft:#F4F4F4;--skel:#E6E6E6;--white:#FFFFFF}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font:400 17px/1.55 "Archivo",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin:0}
.wrap{max-width:1240px;margin:0 auto;padding:0 max(16px,4vw)}
.display{font-family:"Archivo Black",Arial,sans-serif;text-transform:uppercase;letter-spacing:-.02em;line-height:.92}
.eyebrow{font-weight:600;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 26px;border-radius:999px;font-weight:700;font-size:15px;background:var(--red);color:#fff;transition:background .2s}
.btn:hover{background:#8E001A}
.btn.ghost{background:transparent;border:2px solid currentColor}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
/* skeleton = texto pendiente */
.sk{display:block;height:12px;border-radius:6px;background:var(--skel);margin:10px 0}
.sk.w90{width:90%}.sk.w75{width:75%}.sk.w60{width:60%}.sk.w40{width:40%}
.dark .sk{background:rgba(255,255,255,.18)}

/* beta bar */
.beta{background:var(--ink);color:#fff;font-size:13px;text-align:center;padding:8px 16px}
.beta b{color:#FF5A72}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:28px;min-height:72px}
.nav .logo img{height:40px;width:auto}
.nav ul{display:flex;gap:26px;list-style:none;margin:0 0 0 auto;padding:0;font-weight:500;font-size:15px}
.nav ul a:hover{color:var(--red)}
@media(max-width:860px){.nav ul{display:none}.nav .btn{margin-left:auto}}

/* hero */
.hero{position:relative;min-height:min(86svh,820px);display:flex;align-items:flex-end;color:#fff;background:var(--ink);overflow:hidden}
.hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,21,21,.85),rgba(21,21,21,.35) 60%,rgba(21,21,21,.1)),linear-gradient(0deg,rgba(21,21,21,.6),transparent 40%)}
.hero .wrap{position:relative;z-index:1;padding-top:120px;padding-bottom:56px;width:100%}
.hero .eyebrow{color:#fff}
.hero h1{font-size:clamp(42px,6.6vw,104px);margin:18px 0 26px;max-width:14ch}
.hero .row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.date{border:2px solid #fff;border-radius:999px;padding:10px 22px;font-weight:600;font-size:15px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.35);margin-top:48px}
.stats div{padding:18px 12px 0 0}
.stats b{display:block;font:400 clamp(28px,4vw,52px)/1 "Archivo Black",Arial,sans-serif}
.stats span{font-size:14px;opacity:.85}
@media(max-width:640px){.stats{grid-template-columns:repeat(2,1fr)}.stats div{padding-bottom:12px}}

section{padding:clamp(64px,9vw,112px) 0}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.head h2{font-size:clamp(36px,5.5vw,72px);margin-top:12px}

/* carreras */
.races{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.race{position:relative;border-radius:22px;overflow:hidden;aspect-ratio:4/5;color:#fff;background:var(--ink)}
.race img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s}
.race:hover img{transform:scale(1.04)}
.race::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(21,21,21,.9))}
.race .txt{position:absolute;z-index:1;left:28px;right:28px;bottom:28px}
.race .km{font:400 clamp(64px,8vw,110px)/.9 "Archivo Black",Arial,sans-serif;letter-spacing:-.03em}
.race .km small{font-size:.32em;margin-left:6px}
.race h3{font:400 24px/1.1 "Archivo Black",Arial,sans-serif;text-transform:uppercase;margin:10px 0 14px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1.5px solid rgba(255,255,255,.7);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}
.chip.red{background:var(--red);border-color:var(--red)}
@media(max-width:760px){.races{grid-template-columns:1fr}.race{aspect-ratio:4/4.4}}

/* inscripcion */
.insc{background:var(--red);color:#fff}
.insc .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.insc h2{font-size:clamp(40px,6vw,84px)}
.insc .eyebrow{color:#FFD5DC}
.tramos{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid rgba(255,255,255,.35);margin:32px 0}
.tramos div{padding:16px 12px 0 0}
.tramos b{display:block;font:400 clamp(20px,3vw,32px)/1 "Archivo Black",Arial,sans-serif}
.tramos span{font-size:13px;opacity:.85}
.insc .btn{background:#fff;color:var(--red)}
.insc .btn:hover{background:#FFE3E8}
.insc img{border-radius:22px;aspect-ratio:4/5;object-fit:cover;width:100%}
@media(max-width:860px){.insc .wrap{grid-template-columns:1fr}.insc img{aspect-ratio:16/10}}

/* info */
.info{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:22px;overflow:hidden}
.info a{background:#fff;padding:28px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between;transition:background .2s}
.info a:hover{background:var(--soft)}
.info h3{font:400 22px/1.1 "Archivo Black",Arial,sans-serif;text-transform:uppercase}
.info .n{font:400 14px "Archivo Black",Arial,sans-serif;color:var(--red)}
.arrow{font-weight:700;font-size:14px}
@media(max-width:860px){.info{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.info{grid-template-columns:1fr}}

/* galeria */
.gal{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:260px 260px;gap:12px}
.gal img{width:100%;height:100%;object-fit:cover;border-radius:18px}
.gal img:first-child{grid-row:span 2}
@media(max-width:760px){.gal{grid-template-columns:1fr 1fr;grid-template-rows:280px 170px 170px}.gal img:first-child{grid-column:span 2;grid-row:auto}}

/* voluntarios */
.vol{background:var(--ink);color:#fff}
.vol .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.vol h2{font-size:clamp(34px,5vw,64px);max-width:14ch}

/* patrocinadores */
.spons{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.spons div{aspect-ratio:3/2;border:1px dashed #CFCFCF;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#A0A0A0;font-size:12px;font-weight:600;letter-spacing:.08em}
@media(max-width:760px){.spons{grid-template-columns:repeat(3,1fr)}}

/* footer */
footer{background:var(--ink);color:rgba(255,255,255,.8);font-size:14px}
footer .wrap{padding-top:56px;padding-bottom:32px}
.ftop{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.ftop img{height:46px;width:auto}
.fbase{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.fbase .by{display:flex;align-items:center;gap:10px}
.fbase .by img{height:16px;filter:invert(1)}

/* multi-page additions */
.nav ul a[aria-current="page"]{color:var(--red);font-weight:700}
.burger{display:none;margin-left:auto;background:none;border:0;width:44px;height:44px;cursor:pointer;font-size:26px;color:var(--ink)}
@media(max-width:860px){.burger{display:block}.nav .btn{display:none}.nav ul.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:12px max(16px,4vw) 20px;border-bottom:1px solid var(--line);gap:0}.nav ul.open a{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-size:18px}}
.phead{position:relative;color:#fff;background:var(--ink);overflow:hidden}
.phead>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55}
.phead .wrap{position:relative;padding-top:clamp(110px,14vw,190px);padding-bottom:clamp(40px,6vw,72px)}
.phead .eyebrow{color:#fff}
.phead h1{font-size:clamp(44px,8vw,112px);margin-top:14px}
.crumbs{font-size:13px;opacity:.8;margin-bottom:10px}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.facts div{background:#fff;padding:22px}
.facts span{display:block;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--grey);margin-bottom:8px}
.facts b{font:400 26px/1.1 "Archivo Black",Arial,sans-serif}
@media(max-width:760px){.facts{grid-template-columns:1fr 1fr}}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);align-items:start}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.ph{border-radius:22px;background:var(--soft);border:1px dashed #CFCFCF;display:flex;align-items:center;justify-content:center;color:#9A9A9A;font-weight:600;font-size:14px;letter-spacing:.06em;text-transform:uppercase;text-align:center;padding:20px}
.prog{list-style:none;padding:0;margin:0;border-top:2px solid var(--ink)}
.prog li{display:grid;grid-template-columns:110px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);align-items:center}
.prog b{font:400 22px "Archivo Black",Arial,sans-serif}
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.tabs a{border:1.5px solid var(--ink);border-radius:999px;padding:10px 18px;font-weight:600;font-size:14px}
.tabs a.on{background:var(--ink);color:#fff}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{border:1px solid var(--line);border-radius:20px;padding:28px}
.card h3{font:400 22px/1.1 "Archivo Black",Arial,sans-serif;text-transform:uppercase;margin-bottom:8px}
@media(max-width:860px){.cards3{grid-template-columns:1fr}}
.galgrid{columns:3 280px;column-gap:12px}
.galgrid img{width:100%;margin-bottom:12px;border-radius:16px;break-inside:avoid}
.form{display:grid;gap:14px}
.form .f{height:52px;border:1.5px solid var(--line);border-radius:12px;padding:0 16px;display:flex;align-items:center;color:#9A9A9A;font-size:15px}
.form .f.t{height:130px;align-items:flex-start;padding-top:14px}
.next{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:28px;margin-top:56px;font-weight:700}
.next a:hover{color:var(--red)}