:root {
  --pine: #2f4a3a;
  --pine-deep: #22382c;
  --moss: #5a7a5f;
  --sand: #e9e2d3;
  --paper: #f7f4ec;
  --ink: #24312a;
  --ink-soft: #4c5a51;
  --line: #d8d0bd;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: "Fraunces", Georgia, serif; line-height: 1.12; }
h1 { font-size: clamp(2.6rem, 6.5vw, 4.4rem); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); font-weight: 600; margin-bottom: 0.6em; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5em; }

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--moss);
  margin-bottom: 1em;
}

/* Nav */
nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: "Fraunces", Georgia, serif; font-weight: 700; font-size: 1.15rem;
  color: var(--pine); text-decoration: none;
}
.brand svg { width: 26px; height: 26px; fill: var(--pine); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--ink-soft); text-decoration: none; font-size: 0.92rem; font-weight: 500; }
.nav-links a:hover { color: var(--pine); }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--pine); color: var(--paper);
  padding: 13px 26px; border-radius: 8px;
  text-decoration: none; font-weight: 600; font-size: 0.95rem;
  transition: background 0.15s ease;
}
.btn:hover { background: var(--pine-deep); }
.btn-small { padding: 9px 18px; font-size: 0.88rem; color: var(--paper) !important; }
.btn-ghost { background: transparent; color: var(--pine); box-shadow: inset 0 0 0 1.5px var(--pine); }
.btn-ghost:hover { background: rgba(47, 74, 58, 0.08); }
.btn-light { background: var(--paper); color: var(--pine); }
.btn-light:hover { background: var(--sand); }

/* Hero */
.hero {
  position: relative; overflow: hidden; padding: 130px 0 150px;
  background:
    linear-gradient(100deg, rgba(16, 24, 19, 0.78) 0%, rgba(16, 24, 19, 0.45) 52%, rgba(16, 24, 19, 0.18) 100%),
    url("img/hero-scramble.jpg") center 45% / cover no-repeat;
  color: #fff;
}
.hero .kicker { color: #c8dbb9; }
.hero h1 { text-shadow: 0 2px 18px rgba(0, 0, 0, 0.35); }
.hero-inner { position: relative; max-width: 720px; margin: 0 auto 0 max(24px, calc((100% - 1060px) / 2)); }
.lede { font-size: 1.13rem; color: rgba(255, 255, 255, 0.88); margin: 1.4em 0 2em; max-width: 56ch; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .btn { background: var(--paper); color: var(--pine-deep); }
.hero .btn:hover { background: var(--sand); }
.hero .btn-ghost { background: rgba(16, 24, 19, 0.25); color: #fff; box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.75); }
.hero .btn-ghost:hover { background: rgba(16, 24, 19, 0.45); }

/* Topo background */
.topo {
  position: absolute; inset: 0; opacity: 0.5; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='680' height='680' viewBox='0 0 680 680'%3E%3Cg fill='none' stroke='%23c9c0a8' stroke-width='1.4'%3E%3Cpath d='M120 680C40 560 60 470 160 420s230-20 260-120S380 90 480 60s200 40 200 40'/%3E%3Cpath d='M60 680C-10 540 30 430 150 380s250-30 280-140S400 50 500 20'/%3E%3Cpath d='M190 680c-60-100-30-190 60-230s200-10 240-110 -40-230 60-280'/%3E%3Cpath d='M0 620c60-90 160-90 240-140S340 340 360 250 320 60 400 0'/%3E%3Cpath d='M0 520c80-70 180-60 250-120S320 260 340 180 320 40 380-40'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 680px;
}
.hero .topo { opacity: 0.55; }

/* Stats band */
.band { background: var(--pine); color: var(--sand); padding: 34px 0; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats strong { display: block; font-family: "Fraunces", Georgia, serif; font-size: 1.45rem; color: #fff; }
.stats span { font-size: 0.85rem; opacity: 0.85; }

/* Sections */
section { padding: 90px 0; }

/* Old-survey-map background: sepia contour hills, dotted route, X -> camp, cross marks */
#expeditions, #about, .alt {
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='640'%20height='640'%20viewBox='0%200%20640%20640'%3E%3Cg%20fill='none'%20stroke='%237b5f41'%20stroke-opacity='.14'%3E%3Cg%20transform='translate(170,150)'%3E%3Cpath%20transform='scale(.3)'%20d='M-105,0C-100,-58,-52,-102,6,-98C62,-94,104,-52,100,6C96,60,50,98,-6,100C-62,102,-110,56,-105,0Z'/%3E%3Cpath%20transform='scale(.52)'%20d='M-105,0C-100,-58,-52,-102,6,-98C62,-94,104,-52,100,6C96,60,50,98,-6,100C-62,102,-110,56,-105,0Z'/%3E%3Cpath%20transform='scale(.75)'%20d='M-105,0C-100,-58,-52,-102,6,-98C62,-94,104,-52,100,6C96,60,50,98,-6,100C-62,102,-110,56,-105,0Z'/%3E%3Cpath%20d='M-105,0C-100,-58,-52,-102,6,-98C62,-94,104,-52,100,6C96,60,50,98,-6,100C-62,102,-110,56,-105,0Z'/%3E%3C/g%3E%3Cg%20transform='translate(480,470)%20rotate(35)'%3E%3Cpath%20transform='scale(.34)'%20d='M-95,8C-98,-48,-58,-96,-2,-97C55,-98,98,-58,96,0C94,58,52,95,-4,96C-58,97,-92,60,-95,8Z'/%3E%3Cpath%20transform='scale(.6)'%20d='M-95,8C-98,-48,-58,-96,-2,-97C55,-98,98,-58,96,0C94,58,52,95,-4,96C-58,97,-92,60,-95,8Z'/%3E%3Cpath%20transform='scale(.85)'%20d='M-95,8C-98,-48,-58,-96,-2,-97C55,-98,98,-58,96,0C94,58,52,95,-4,96C-58,97,-92,60,-95,8Z'/%3E%3Cpath%20d='M-95,8C-98,-48,-58,-96,-2,-97C55,-98,98,-58,96,0C94,58,52,95,-4,96C-58,97,-92,60,-95,8Z'/%3E%3C/g%3E%3C/g%3E%3Cpath%20fill='none'%20stroke='%237b5f41'%20stroke-opacity='.2'%20stroke-dasharray='1%207'%20stroke-linecap='round'%20d='M70,560C170,500,150,380,250,330C350,280,400,220,540,180'/%3E%3Cg%20fill='none'%20stroke='%237b5f41'%20stroke-opacity='.2'%3E%3Cpath%20d='M64,554l12,12M76,554l-12,12'/%3E%3Cpath%20d='M533,186l7,-13l7,13Z'/%3E%3C/g%3E%3Cg%20stroke='%237b5f41'%20stroke-opacity='.1'%3E%3Cpath%20d='M320,54v12M314,60h12M560,294v12M554,300h12M100,374v12M94,380h12M420,574v12M414,580h12'/%3E%3C/g%3E%3C/svg%3E");
  background-size: 640px;
}
.alt { background-color: var(--sand); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 40px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 28px 26px;
}
.card p { color: var(--ink-soft); font-size: 0.96rem; }

.split { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.split p { color: var(--ink-soft); margin-bottom: 1em; }

.checks { list-style: none; display: grid; gap: 18px; }
.checks li {
  padding-left: 34px; position: relative; color: var(--ink-soft); font-size: 0.98rem;
}
.checks li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--pine); color: var(--paper);
  font-size: 0.75rem; line-height: 22px; text-align: center; font-weight: 700;
}
.checks strong { color: var(--ink); }

/* About photo */
.about-grid { align-items: center; }
.about-grid figure img { width: 100%; border-radius: 14px; display: block; }

/* Slideshow */
.slider { position: relative; max-width: 820px; margin: 36px auto 0; }
.slides {
  display: flex; overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-radius: 14px;
  scrollbar-width: none;
}
.slides::-webkit-scrollbar { display: none; }
.slides img {
  flex: 0 0 100%; width: 100%; height: 400px;
  object-fit: cover; scroll-snap-align: center; scroll-snap-stop: always;
}
.slides img.pos-top { object-position: center top; }
.slides img.pos-bottom { object-position: center bottom; }
.slide-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%; border: none;
  background: rgba(247, 244, 236, 0.85); color: var(--pine-deep);
  font-size: 1.5rem; line-height: 1; cursor: pointer;
}
.slide-btn:hover { background: var(--paper); }
.slide-btn.prev { left: 12px; }
.slide-btn.next { right: 12px; }
.dots { display: flex; justify-content: center; gap: 8px; margin-top: 14px; }
.dots button {
  width: 9px; height: 9px; border-radius: 50%; border: none;
  background: var(--line); cursor: pointer; padding: 0;
}
.dots button.on { background: var(--pine); }
@media (max-width: 820px) {
  .slides img { height: 260px; }
}

/* Contact */
.contact { position: relative; background: var(--pine-deep); color: var(--paper); text-align: center; overflow: hidden; }
.contact .topo { opacity: 0.12; filter: invert(1); }
.contact-inner { position: relative; }
.contact p { opacity: 0.85; margin-bottom: 2em; }

footer { background: var(--pine-deep); color: rgba(247, 244, 236, 0.6); border-top: 1px solid rgba(255,255,255,0.12); padding: 22px 0; font-size: 0.85rem; }
.foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

@media (max-width: 820px) {
  .nav-links a:not(.btn) { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 90px 0 110px; }
  section { padding: 64px 0; }
  .gallery-grid { grid-template-columns: 1fr; }
}