/* Base Camp Reading — shared stylesheet.
   Art direction is hand-drawn topographic line work, not stock photography:
   it suits "Base Camp", costs nothing to license, and cannot look rented. */
:root{
  --paper:#fbfaf7; --panel:#ffffff; --ink:#1d2420; --ink-soft:#5c6761;
  --pine:#1f4d3d; --pine-soft:#eaf1ed; --amber:#b5731f; --amber-soft:#fbf1e3;
  --rule:#e3e2dc; --topo:rgba(31,77,61,.16);
  --font-display:'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:'Karla', ui-sans-serif, system-ui, -apple-system, sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#141715; --panel:#1c211e; --ink:#eceee9; --ink-soft:#9ba69f;
    --pine:#7fc4a6; --pine-soft:#19251f; --amber:#e0a35c; --amber-soft:#262018;
    --rule:#2c332e; --topo:rgba(127,196,166,.17); color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#141715; --panel:#1c211e; --ink:#eceee9; --ink-soft:#9ba69f;
  --pine:#7fc4a6; --pine-soft:#19251f; --amber:#e0a35c; --amber-soft:#262018;
  --rule:#2c332e; --topo:rgba(127,196,166,.17); color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--paper);color:var(--ink);font-family:var(--font-body);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;margin:0;overflow-x:hidden}
.band{width:100%;position:relative}
.inner{max-width:720px;margin:0 auto;position:relative;z-index:1;
  padding-left:max(16px, env(safe-area-inset-left, 0px));
  padding-right:max(16px, env(safe-area-inset-right, 0px));
  padding-block:56px}
.inner.tight{padding-block:40px}
.inner.wide{max-width:880px}

/* nav */
.nav{border-bottom:1px solid var(--rule);background:var(--paper);
  position:sticky;top:0;z-index:10}
.nav .inner{padding-block:14px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.brand{font-family:var(--font-display);font-size:18px;font-weight:600;
  letter-spacing:-.01em;color:var(--pine);text-decoration:none;white-space:nowrap}
.brand span{color:var(--amber)}
.navlinks{display:flex;gap:16px;flex-wrap:wrap;margin-left:auto}
.navlinks a{font-size:15px;font-weight:600;color:var(--ink-soft);text-decoration:none}
.navlinks a:hover{color:var(--ink)}
.navlinks a[aria-current="page"]{color:var(--pine)}
@media (max-width:560px){ .navlinks{margin-left:0;width:100%;gap:14px} }

h1{font-family:var(--font-display);font-size:clamp(31px,6vw,48px);font-weight:600;
  line-height:1.1;letter-spacing:-.022em;margin:0 0 18px;text-wrap:balance;max-width:20em}
h2{font-family:var(--font-display);font-size:clamp(23px,4vw,31px);font-weight:600;
  letter-spacing:-.016em;line-height:1.18;margin:0 0 18px;text-wrap:balance}
h3{font-family:var(--font-body);font-size:17px;font-weight:700;margin:0 0 6px}
p{margin:0 0 16px} p:last-child{margin-bottom:0}
.sub{margin-top:0;font-size:19px;line-height:1.55;color:var(--ink-soft);max-width:34em}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--amber);margin-bottom:12px}
a{color:var(--pine)}

.hero{overflow:hidden}
.hero .inner{padding-block:64px 56px}
.topo{position:absolute;top:50%;left:50%;width:min(1100px,150vw);height:auto;
  transform:translate(-18%,-52%);color:var(--topo);pointer-events:none;z-index:0;
  -webkit-mask-image:radial-gradient(60% 60% at 50% 50%,#000 45%,transparent 100%);
          mask-image:radial-gradient(60% 60% at 50% 50%,#000 45%,transparent 100%)}
@media (max-width:760px){ .topo{transform:translate(-32%,-48%);opacity:.75} }

.cta{display:inline-block;margin-top:22px;background:var(--pine);color:var(--paper);
  font-family:var(--font-body);font-weight:700;font-size:16px;padding:14px 26px;
  border-radius:999px;text-decoration:none;border:0;cursor:pointer}
.cta.ghost{background:transparent;color:var(--pine);border:1.5px solid var(--pine)}
.cta:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.cta-note{margin-top:12px;font-size:14px;color:var(--ink-soft);max-width:30em}
.funded{margin-top:26px;padding:16px 18px;background:var(--amber-soft);
  border-radius:10px;font-size:15.5px;line-height:1.5;max-width:34em}
.quietband{background:var(--pine-soft)}
.panelband{background:var(--panel);border-block:1px solid var(--rule)}
.ridge{display:block;width:100%;height:54px;color:var(--rule)}

.signs{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.signs li{position:relative;padding-left:26px;font-size:17px;line-height:1.5}
.signs li::before{content:"";position:absolute;left:0;top:.52em;width:11px;height:11px;
  border-radius:50%;border:2px solid var(--amber)}
.steps{display:flex;flex-direction:column;margin-top:4px}
.step{display:flex;gap:18px;padding-block:20px;border-bottom:1px solid var(--rule)}
.step:last-child{border-bottom:0}
.step-n{flex:0 0 36px;height:36px;border-radius:50%;background:var(--pine);color:var(--paper);
  font-family:var(--font-display);font-weight:600;font-size:17px;
  display:flex;align-items:center;justify-content:center}
.step-b{flex:1;min-width:0}
.pull{font-family:var(--font-display);font-size:clamp(21px,3.6vw,27px);line-height:1.34;
  font-weight:400;font-style:italic;color:var(--ink);border-left:3px solid var(--amber);
  padding-left:20px;margin:0}
.pull cite{display:block;margin-top:14px;font-family:var(--font-body);font-style:normal;
  font-size:14px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-soft)}
.who{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:6px}
.card{background:var(--panel);border:1px solid var(--rule);border-radius:12px;padding:20px;min-width:0}
.card p{font-size:16px;color:var(--ink-soft);margin:0}
.price{background:var(--panel);border:1px solid var(--rule);border-radius:14px;padding:26px}
.price + .price{margin-top:16px}
.price-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.price-amt{font-family:var(--font-display);font-size:34px;font-weight:600;letter-spacing:-.02em;
  color:var(--pine);font-variant-numeric:tabular-nums}
.price-unit{font-size:16px;color:var(--ink-soft);font-weight:500}
.price ul{margin:18px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}
.price li{position:relative;padding-left:24px;font-size:16px}
.price li::before{content:"";position:absolute;left:2px;top:.46em;width:9px;height:5px;
  border-left:2px solid var(--pine);border-bottom:2px solid var(--pine);transform:rotate(-45deg)}
.creds{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.cred{font-size:13px;font-weight:600;letter-spacing:.03em;background:var(--amber-soft);
  color:var(--amber);padding:6px 12px;border-radius:999px}
.next{margin:20px 0 0;padding:0;list-style:none;display:flex;flex-direction:column;gap:11px}
.next li{position:relative;padding-left:30px;font-size:17px;line-height:1.5}
.next li::before{content:"";position:absolute;left:0;top:.42em;width:14px;height:2px;background:var(--amber)}
.qa{border-top:1px solid var(--rule)}
.qa details{border-bottom:1px solid var(--rule);padding-block:16px}
.qa summary{font-weight:700;cursor:pointer;list-style:none;font-size:17px;line-height:1.4}
.qa summary::-webkit-details-marker{display:none}
.qa summary::before{content:"+";color:var(--amber);font-weight:700;margin-right:10px}
.qa details[open] summary::before{content:"\2013"}
.qa .ans{margin-top:12px;color:var(--ink-soft)}
.qa .ans p{margin-bottom:12px}
footer{border-top:1px solid var(--rule)}
footer .inner{padding-block:30px;font-size:14px;color:var(--ink-soft)}
footer p{margin:0 0 8px} footer p:last-child{margin:0}
footer a{color:var(--ink-soft)}
.fnav{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:12px}

/* two-tier pricing */
.tiers{display:grid;gap:16px;grid-template-columns:1fr 1fr;align-items:start}
@media (max-width:720px){ .tiers{grid-template-columns:1fr} }
.tier{background:var(--panel);border:1px solid var(--rule);border-radius:14px;
  padding:26px;display:flex;flex-direction:column;gap:14px;height:100%}
.tier.flag{border:2px solid var(--pine);background:var(--pine-soft)}
.tier-tag{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--amber)}
.tier.flag .tier-tag{color:var(--pine)}
.tier-name{font-family:var(--font-display);font-size:23px;font-weight:600;
  letter-spacing:-.016em;margin:0}
.tier-amt{font-family:var(--font-display);font-size:40px;font-weight:600;
  letter-spacing:-.022em;color:var(--pine);font-variant-numeric:tabular-nums;line-height:1}
.tier-per{font-size:16px;color:var(--ink-soft);font-weight:500}
.tier ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.tier li{position:relative;padding-left:24px;font-size:16.5px;line-height:1.5}
.tier li::before{content:"";position:absolute;left:0;top:.5em;width:10px;height:10px;
  border-radius:50%;border:2px solid var(--pine)}
.tier .cta{margin-top:auto;text-align:center;width:100%}
.tier-fine{font-size:14.5px;color:var(--ink-soft);margin:0}
.mathbox{background:var(--panel);border:1px solid var(--rule);border-radius:14px;
  padding:26px;margin-top:8px}
.mathrow{display:flex;justify-content:space-between;gap:16px;padding:11px 0;
  border-bottom:1px solid var(--rule);font-size:16.5px}
.mathrow:last-of-type{border-bottom:0}
.mathrow b{font-variant-numeric:tabular-nums}
.mathrow.tot{font-weight:700;color:var(--pine);font-size:18px}

/* Photography — licence-verified Wikimedia Commons, hotlinked; credit line is part of the licence. */
.photo{margin:0;position:relative;border-radius:14px;overflow:hidden;background:var(--pine-soft);
  box-shadow:0 1px 0 var(--rule), 0 18px 40px -28px rgba(0,0,0,.45)}
.photo img{display:block;width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.photo.tall img{aspect-ratio:4/5}
.photo figcaption{position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:12px;line-height:1.35;
  color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.55));text-shadow:0 1px 2px rgba(0,0,0,.5)}
.photo figcaption a{color:#fff;text-decoration:underline;text-underline-offset:2px}
.photoband .inner{padding-block:0 8px}
.hero-with-photo .inner{padding-block:48px 40px}
.hero-with-photo .photo{margin-top:28px}
.splitphoto{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
@media (max-width:760px){ .splitphoto{grid-template-columns:1fr} .photo.tall img{aspect-ratio:4/3} }

/* Full-screen photo hero (home). Photo sits behind the copy; a dark gradient keeps the words readable on any phone. */
.hero-full{min-height:100vh;min-height:100svh;display:flex;align-items:center;color:#fff;
  background:linear-gradient(180deg,rgba(10,20,16,.25) 0%,rgba(10,20,16,.45) 45%,rgba(10,20,16,.78) 100%),
  url("img/trekkers-everest-base-camp.jpg") center 35%/cover no-repeat}
.hero-full .topo{display:none}
.hero-full .inner{padding-block:96px 88px;width:100%}
.hero-full h1,.hero-full .sub,.hero-full .eyebrow{color:#fff;text-shadow:0 2px 14px rgba(0,0,0,.45)}
.hero-full .eyebrow{opacity:.92}
.hero-full .sub{max-width:34em}
.hero-full .cta-note{color:rgba(255,255,255,.88)}
.hero-full .funded{background:rgba(10,20,16,.55);border-color:rgba(255,255,255,.22);color:#fff;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.hero-full .funded a{color:#ffd9a3}
.hero-full .cta{background:#b5731f;color:#fff}
.hero-credit{position:absolute;right:14px;bottom:10px;z-index:2;font-size:11px;color:rgba(255,255,255,.75);max-width:90%;text-align:right}
.hero-credit a{color:rgba(255,255,255,.85)}
@media (max-width:760px){.hero-full{background-position:60% 30%}.hero-full .inner{padding-block:72px 64px}}