/* Ice Everest · sistema visual a partir del logo: blanco, negro y el azul hielo #226679 */
@font-face{font-family:"Fraunces";src:url("fonts/fraunces.woff2") format("woff2");font-weight:400 900;font-display:swap}
@font-face{font-family:"Instrument Sans";src:url("fonts/instrumentsans.woff2") format("woff2");font-weight:400 700;font-display:swap}
:root{color-scheme:light;--paper:#ffffff;--paper2:#eef3f5;--ink:#0b0f11;--mute:#56646a;--line:#d5dfe3;--teal:#226679;--coral:#226679;--ice:#7cc4d6;--card:#ffffff;--tk-bg:#0b0f11;--tk-ink:#ffffff;--tk-mute:#9db1b8;--tk-line:#2c383d;--ok:#226679;
  --display:"Fraunces",Georgia,"Times New Roman",serif;--body:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 17px/1.65 var(--body);color:var(--ink);background:var(--paper)}
a{color:var(--teal);text-underline-offset:3px}
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.015em;line-height:1.12;margin:0}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:740px}
.kicker{font:600 .76rem/1 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--coral);display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:28px;height:2px;background:var(--coral)}

/* cabecera */
header.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:20px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.logo{display:block;line-height:0}
.logo img{height:74px;width:auto;display:block}
@media (max-width:520px){.logo img{height:58px}}
nav{display:flex;gap:22px}
nav a{text-decoration:none;font-weight:600;font-size:.95rem;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent}
nav a:hover{border-bottom-color:var(--coral)}

/* portada */
.hero{padding:64px 0 72px;position:relative;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(2.5rem,6.4vw,4.6rem);font-weight:500;margin:22px 0 22px;font-variation-settings:"opsz" 144}
.hero h1 u{text-decoration:none;background:linear-gradient(transparent 68%,color-mix(in srgb,var(--coral) 45%,transparent) 68%)}
.hero p.deck{font-size:1.2rem;color:var(--mute);max-width:520px;margin:0 0 28px}
.route{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;color:var(--line)}
.actions{display:flex;flex-wrap:wrap;gap:12px 22px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--ink);color:var(--paper);padding:15px 24px;border-radius:999px;font:600 1rem/1 var(--body);text-decoration:none;border:0;cursor:pointer;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn::after{content:"→";font-size:1.1rem}
.link{font-weight:600;color:var(--ink);text-decoration:underline;text-decoration-color:var(--coral);text-decoration-thickness:2px}

/* boleto: portada y resultado de la calculadora */
.ticket{background:var(--tk-bg);color:var(--tk-ink);border-radius:20px;padding:26px 26px 22px;position:relative;box-shadow:0 24px 50px -28px rgba(20,35,43,.55)}
.hero .ticket{transform:rotate(2.2deg)}
.ticket .tk-head{display:flex;justify-content:space-between;align-items:baseline;font:600 .72rem/1 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--tk-mute);padding-bottom:16px}
.ticket .tk-total{font:500 2.7rem/1.05 var(--display);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;font-variation-settings:"opsz" 144}
.ticket .tk-sub{color:var(--tk-mute);font-size:.86rem;margin-top:4px}
.ticket .perf{margin:20px -26px;border-top:2px dashed var(--tk-line);position:relative;height:0}
.ticket .perf::before,.ticket .perf::after{content:"";position:absolute;top:-12px;width:22px;height:22px;border-radius:50%;background:var(--paper)}
.ticket .perf::before{left:-11px}.ticket .perf::after{right:-11px}
.ticket .row{display:flex;justify-content:space-between;gap:12px;padding:7px 0;font-size:.95rem;border-bottom:1px solid var(--tk-line)}
.ticket .row:last-of-type{border-bottom:0}
.ticket .row b{font-variant-numeric:tabular-nums;font-weight:600;white-space:nowrap}
.ticket .row.x span{color:var(--ice)}
.ticket .foot{font-size:.78rem;color:var(--tk-mute);margin-top:12px}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:16px;border-top:1px solid var(--tk-line)}
.kpi{padding:12px 0 0}
.kpi+.kpi{padding-left:16px;border-left:1px solid var(--tk-line)}
.kpi b{display:block;font:500 1.3rem/1.2 var(--display);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.kpi span{font-size:.78rem;color:var(--tk-mute)}
.bars .r{display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:9px 0;font-size:.93rem;border-bottom:1px solid var(--tk-line)}
.bars .r:last-child{border-bottom:0}
.bars .r b{font-variant-numeric:tabular-nums;font-weight:600}
.bars .bar{grid-column:1/-1;height:3px;background:var(--tk-line)}
.bars .bar i{display:block;height:100%;background:var(--tk-ink)}
.bars .r.x span{color:var(--ice)}.bars .r.x .bar i{background:var(--ice)}
.save{margin-top:14px;font-size:.95rem;color:var(--tk-ink)}

/* secciones */
section{padding:64px 0}
.band{background:var(--paper2)}
.sec-head{display:grid;grid-template-columns:1fr 1.4fr;gap:32px;align-items:end;margin-bottom:34px}
.sec-head h2{font-size:clamp(1.8rem,3.6vw,2.6rem);margin-top:14px}
.sec-head p{margin:0;color:var(--mute);max-width:520px}
h2{font-size:1.9rem}

/* tres principios */
.facts{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}
.fact{padding:22px 24px 4px 0}
.fact+.fact{padding-left:24px;border-left:1px solid var(--line)}
.fact .num{font:500 .85rem/1 var(--display);color:var(--coral)}
.fact h3{font-size:1.3rem;margin:10px 0 8px}
.fact p{margin:0;color:var(--mute);font-size:.97rem}

/* índice de guías, como sumario de revista */
.index{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}
.index li{border-bottom:1px solid var(--line)}
.index a{display:grid;grid-template-columns:64px 1fr auto;gap:20px;align-items:center;padding:24px 0;text-decoration:none;color:inherit}
.index .i{font:500 1.5rem/1 var(--display);color:var(--coral)}
.index .tag{font:600 .72rem/1 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--mute)}
.index h3{font-size:clamp(1.25rem,2.6vw,1.7rem);margin:8px 0 6px;transition:color .15s}
.index p{margin:0;color:var(--mute);font-size:.97rem;max-width:620px}
.index .go{width:46px;height:46px;border-radius:50%;border:1px solid var(--ink);display:grid;place-items:center;font-size:1.2rem;transition:background .15s,color .15s}
.index a:hover h3{color:var(--coral)}
.index a:hover .go{background:var(--ink);color:var(--paper)}

/* artículos */
.a-head{padding:56px 0 34px;border-bottom:1px solid var(--ink)}
.a-head h1{font-size:clamp(2.1rem,5.4vw,3.6rem);font-weight:500;margin:20px 0 18px;font-variation-settings:"opsz" 144}
.a-head .deck{font-size:1.22rem;color:var(--mute);margin:0 0 18px;max-width:620px}
.a-head .meta{font-size:.85rem;color:var(--mute);letter-spacing:.04em}
article{padding-top:34px}
article h1{font-size:clamp(2rem,5vw,3rem);margin-bottom:18px}
article h2{font-size:1.75rem;margin:52px 0 16px;scroll-margin-top:16px}
article p,article li{font-size:1.07rem}
.lead{font:400 1.32rem/1.5 var(--display);color:var(--ink)}
.note{border-top:2px solid var(--ink);border-bottom:1px solid var(--line);padding:18px 0;margin:30px 0}
.note strong.t,.tip strong.t{display:block;font:600 .74rem/1 var(--body);letter-spacing:.16em;text-transform:uppercase;color:var(--coral);margin-bottom:8px}
.note p{font:500 1.25rem/1.45 var(--display)!important}
.tip{background:var(--paper2);border-left:3px solid var(--coral);padding:18px 22px;margin:30px 0}
/* pasos como paradas de una ruta */
.steps{margin:26px 0;position:relative}
.step{display:grid;grid-template-columns:52px 1fr;gap:20px;padding-bottom:26px;position:relative}
.step::before{content:"";position:absolute;left:25px;top:52px;bottom:0;border-left:2px dashed var(--line)}
.step:last-child::before{display:none}
.step .n{width:52px;height:52px;border-radius:50%;border:2px solid var(--ink);background:var(--paper);display:grid;place-items:center;font:600 1.3rem/1 var(--display);position:relative;z-index:1}
.step h3{font-size:1.3rem;margin:12px 0 6px}
.step p{margin:0;color:var(--mute)}
.tbl{overflow-x:auto;margin:26px 0}
.tbl table{width:100%;border-collapse:collapse;font-size:.97rem}
.tbl th{text-align:left;padding:10px 12px 10px 0;font:600 .72rem/1.2 var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--mute);border-bottom:2px solid var(--ink)}
.tbl td{padding:11px 12px 11px 0;border-bottom:1px solid var(--line);vertical-align:top}
.tbl td:last-child,.tbl th:last-child{padding-right:0}
.tbl.num td:last-child,.tbl.num th:last-child{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl caption{caption-side:bottom;text-align:left;padding:10px 0;font-size:.85rem;color:var(--mute)}
.ticks{list-style:none;padding:0;margin:24px 0;columns:2;column-gap:36px}
.ticks li{break-inside:avoid;padding:10px 0 10px 30px;position:relative;border-bottom:1px solid var(--line);font-size:1rem}
.ticks li::before{content:"";position:absolute;left:2px;top:17px;width:14px;height:8px;border-left:2px solid var(--coral);border-bottom:2px solid var(--coral);transform:rotate(-45deg)}
.cta{background:var(--tk-bg);color:var(--tk-ink);border-radius:22px;padding:38px 34px;margin:56px 0 10px;display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center}
.cta h2{font-size:1.8rem;margin:0 0 6px;color:var(--tk-ink)}
.cta p{color:var(--tk-mute);margin:0;font-size:1rem}
.cta .btn{background:#fff;color:var(--ink)}

/* calculadora */
.c-head{padding:52px 0 8px}
.c-head h1{font-size:clamp(2.1rem,5.4vw,3.6rem);font-weight:500;margin:20px 0 14px;font-variation-settings:"opsz" 144}
.c-head p{font-size:1.15rem;color:var(--mute);max-width:600px;margin:0}
.calc{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start;padding-top:28px}
fieldset{border:0;padding:0;margin:0 0 34px}
legend{display:flex;align-items:baseline;gap:12px;width:100%;padding:0 0 10px;border-bottom:1px solid var(--ink);font:600 1.3rem/1 var(--display)}
legend i{font:500 .85rem/1 var(--display);font-style:normal;color:var(--coral)}
.f{display:grid;grid-template-columns:1fr 140px;gap:14px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.f label{font-weight:500}
.f small{display:block;color:var(--mute);font-size:.84rem;font-weight:400}
input[type=number],input[type=text]{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);font:600 1.02rem/1.2 var(--body);text-align:right;font-variant-numeric:tabular-nums}
input:focus{outline:2px solid var(--coral);outline-offset:1px;border-color:transparent}
.sticky{position:sticky;top:18px}
.plain-btn{background:none;border:0;padding:0;font:600 .95rem var(--body);color:var(--ink);text-decoration:underline;text-decoration-color:var(--coral);text-decoration-thickness:2px;text-underline-offset:3px;cursor:pointer}

/* pie */
footer{background:var(--paper2);color:var(--mute);padding:44px 0;margin-top:40px;font-size:.92rem;border-top:1px solid var(--ink)}
footer .wrap{display:grid;grid-template-columns:1fr 1fr;gap:28px}
footer .logo{margin-bottom:16px}
footer .logo img{height:88px;mix-blend-mode:multiply}
footer a{color:var(--ink);font-weight:600}
footer p{margin:0 0 8px}
footer .links{display:flex;flex-direction:column;gap:8px;align-items:flex-end}

@media (max-width:860px){
  .hero{padding:40px 0 56px}
  .hero .wrap,.calc,.sec-head,footer .wrap{grid-template-columns:1fr}
  .hero .wrap{gap:40px}.hero .ticket{transform:rotate(1.2deg)}
  .sec-head{gap:12px}
  .facts{grid-template-columns:1fr}.fact+.fact{padding-left:0;border-left:0;border-top:1px solid var(--line)}.fact{padding:20px 0 16px}
  .index a{grid-template-columns:40px 1fr}.index .go{display:none}
  .ticks{columns:1}
  .cta{grid-template-columns:1fr;padding:30px 24px}
  .sticky{position:static}
  footer .links{align-items:flex-start}
  section{padding:48px 0}
}
@media (max-width:420px){.f{grid-template-columns:1fr 116px}.wrap{padding:0 18px}.ticket{padding:22px 20px 18px}.ticket .perf{margin:18px -20px}}
@media print{header.top,footer,.noprint,.route{display:none}.calc{grid-template-columns:1fr}body{background:#fff}}