:root {
  --ink: #1d2924;
  --muted: #68736c;
  --paper: #f5f0e6;
  --cream: #ede5d5;
  --green: #315b4b;
  --green-deep: #17392f;
  --red: #8a3f37;
  --gold: #b18a43;
  --line: rgba(29, 41, 36, .17);
  --white: #fffdf8;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); line-height: 1.65; }
a { color: inherit; }
img { display: block; width: 100%; height: auto; }
button { font: inherit; }
.wrap { width: min(1240px, calc(100% - 44px)); margin-inline: auto; }
.eyebrow { margin: 0 0 .6rem; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .72rem; font-weight: 750; letter-spacing: .17em; text-transform: uppercase; }
h1, h2 { margin: 0; font-weight: 500; line-height: .98; letter-spacing: -.035em; }
h1 { max-width: 850px; font-size: clamp(4rem, 10vw, 9rem); }
h2 { font-size: clamp(2.25rem, 5vw, 4.7rem); }
p { margin: 0 0 1.1rem; }

.hero { position: relative; min-height: 92vh; overflow: hidden; color: #fff8ec; background: radial-gradient(circle at 82% 22%, rgba(196,155,76,.34), transparent 28%), linear-gradient(135deg, #17392f 0%, #214a3d 52%, #102b25 100%); }
.hero::after { position: absolute; right: -8vw; bottom: -18vw; width: 58vw; height: 58vw; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: 0 0 0 7vw rgba(255,255,255,.025), 0 0 0 14vw rgba(255,255,255,.018); content: ""; }
.hero__grain { position: absolute; inset: 0; opacity: .16; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.24'/%3E%3C/svg%3E"); }
.hero__inner { position: relative; z-index: 1; display: flex; min-height: 92vh; padding-block: clamp(70px, 12vh, 150px) 46px; flex-direction: column; justify-content: flex-end; }
.hero__intro { max-width: 690px; margin: 2.2rem 0 2.7rem; font-size: clamp(1.2rem, 2vw, 1.6rem); line-height: 1.42; }
.hero__nav { display: flex; gap: 1.3rem 2.2rem; flex-wrap: wrap; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .85rem; text-transform: uppercase; letter-spacing: .1em; }
.hero__nav a { padding-bottom: .2rem; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.45); }

.intro { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(40px, 8vw, 130px); padding-block: clamp(80px, 11vw, 150px); }
.intro__copy { max-width: 650px; padding-top: .5rem; font-size: 1.17rem; }

.explorer { padding-block: clamp(70px, 9vw, 120px); }
.explorer--tree { color: #f8f2e6; background: #17392f; }
.explorer--map { color: var(--ink); background: var(--cream); }
.section-heading { display: flex; gap: 30px; align-items: flex-end; justify-content: space-between; margin-bottom: 38px; }
.section-heading p:not(.eyebrow) { max-width: 700px; margin: 1rem 0 0; }
.controls { display: flex; flex: 0 0 auto; overflow: hidden; border: 1px solid currentColor; border-radius: 999px; }
.controls button { min-width: 46px; height: 40px; padding-inline: 13px; color: inherit; cursor: pointer; border: 0; border-right: 1px solid currentColor; background: transparent; }
.controls button:last-child { border-right: 0; }
.controls button:hover { color: #17392f; background: #f8f2e6; }
.explorer--map .controls button:hover { color: #fff; background: var(--green); }

.tree-shell { position: relative; width: 100%; height: min(74vh, 760px); overflow: hidden; cursor: grab; border-block: 1px solid rgba(255,255,255,.18); background: radial-gradient(circle at center, rgba(255,255,255,.06), transparent 63%); touch-action: none; }
.tree-shell:active, .map-shell:active { cursor: grabbing; }
.tree-shell svg, .map-shell svg { width: 100%; height: 100%; }
.tree-edge { fill: none; stroke: rgba(244,236,219,.35); stroke-width: 2; }
.tree-node { cursor: pointer; }
.tree-node rect { stroke: rgba(255,255,255,.42); stroke-width: 1.4; transition: filter .2s, stroke .2s; }
.tree-node:hover rect, .tree-node:focus rect { filter: brightness(1.13); stroke: #fff; }
.tree-node text { pointer-events: none; fill: #fffdf8; font-family: ui-sans-serif, system-ui, sans-serif; }
.tree-node .tree-name { font-size: 16px; }
.tree-node .tree-years { opacity: .68; font-size: 12px; }
.branch-key { display: flex; gap: 14px 28px; flex-wrap: wrap; padding-top: 25px; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .8rem; }
.branch-key span { display: inline-flex; align-items: center; gap: 8px; }
.branch-key i { width: 10px; height: 10px; border-radius: 50%; }
.key-mckinnon { background: #567b6b; }.key-fawcett { background: #8f6549; }.key-faull { background: #897542; }.key-waddy { background: #765d72; }

.map-shell { position: relative; height: min(70vh, 690px); overflow: hidden; cursor: grab; border: 1px solid rgba(29,41,36,.18); background: #dce4de; touch-action: none; }
.map-country { fill: #f7f3ea; stroke: #b7c3bb; stroke-width: .6; vector-effect: non-scaling-stroke; }
.map-route { fill: none; stroke: rgba(138,63,55,.38); stroke-width: 1.4; stroke-dasharray: 4 5; vector-effect: non-scaling-stroke; }
.map-point { cursor: pointer; fill: var(--red); stroke: #fff; stroke-width: 1.6; vector-effect: non-scaling-stroke; }
.map-point:hover, .map-point:focus { fill: #d39c51; }
.floating-tip { position: absolute; z-index: 5; display: none; max-width: 310px; padding: 16px 18px; pointer-events: none; color: var(--ink); border: 1px solid rgba(29,41,36,.18); background: rgba(255,253,248,.97); box-shadow: 0 14px 40px rgba(0,0,0,.22); font-family: ui-sans-serif, system-ui, sans-serif; font-size: .84rem; line-height: 1.45; }
.floating-tip.is-visible { display: block; }
.floating-tip strong { display: block; margin-bottom: 3px; font-size: .98rem; }
.floating-tip span { display: block; margin-bottom: 8px; color: #7c5346; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }

.chapters { padding-block: clamp(80px, 11vw, 150px); }
.chapter { display: grid; gap: clamp(34px, 6vw, 86px); padding-block: clamp(55px, 8vw, 100px); border-top: 1px solid var(--line); }
.chapter--wide { grid-template-columns: minmax(150px, .32fr) minmax(0, 1.68fr); }
.chapter--image-right { grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); align-items: center; }
.chapter--image-left { grid-template-columns: minmax(320px, .9fr) minmax(0, 1.1fr); align-items: center; }
.chapter--split { grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); }
.chapter__year { padding-top: .35rem; color: var(--red); font-family: ui-sans-serif, system-ui, sans-serif; font-size: .75rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.chapter__body { max-width: 800px; }
.chapter__body h2 { margin-bottom: 1.6rem; font-size: clamp(2rem, 4.3vw, 4rem); }
.chapter__body p:not(.eyebrow) { font-size: 1.08rem; }
figure { margin: 0; }
figure img { border-radius: 2px; }
figcaption { margin-top: .65rem; color: var(--muted); font-family: ui-sans-serif, system-ui, sans-serif; font-size: .76rem; line-height: 1.45; }
.portrait-pair { display: grid; grid-template-columns: .8fr 1.2fr; gap: 18px; align-items: end; }
.chapter--earth, .chapter--red { width: calc(100% + 44px); margin-left: -22px; padding-inline: clamp(24px, 6vw, 90px); border: 0; }
.chapter--earth { color: #fff8ec; background: var(--green); }
.chapter--red { color: #fff8ec; background: var(--red); }
.chapter--earth .chapter__year, .chapter--red .chapter__year { color: #f1d89e; }

.gallery { padding-block: clamp(70px, 9vw, 120px); background: #e7decd; }
.archive-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 0 auto clamp(70px, 9vw, 120px); overflow: hidden; color: #fff8ec; background: rgba(49,91,75,.24); }
.archive-summary div { min-width: 0; padding: 22px 20px; background: var(--green); }
.archive-summary strong, .archive-summary span { display: block; }
.archive-summary strong { font-size: clamp(1.7rem, 3vw, 2.7rem); font-weight: 500; line-height: 1; }
.archive-summary span { margin-top: 8px; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .74rem; line-height: 1.35; }
.gallery__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.gallery__wide { grid-column: span 2; }
.gallery__grid figure { display: flex; flex-direction: column; }
.gallery__grid img { width: 100%; height: auto; }

@media (max-width: 1020px) {
  .gallery__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery__wide { grid-column: auto; }
}

@media (max-width: 640px) {
  .archive-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.sources { padding-block: clamp(70px, 9vw, 120px); }
.sources h2 { margin-bottom: 1.5rem; }
.sources > p:last-child { max-width: 820px; font-size: 1.1rem; }
footer { color: #f8f2e6; background: #102b25; font-family: ui-sans-serif, system-ui, sans-serif; }
.footer__inner { display: flex; justify-content: space-between; gap: 24px; padding-block: 30px; font-size: .8rem; }

@media (max-width: 780px) {
  .wrap { width: min(100% - 28px, 1240px); }
  .hero { min-height: 86svh; }
  .hero__inner { min-height: 86svh; }
  .hero__nav { gap: 1rem 1.4rem; }
  .intro, .chapter, .chapter--wide, .chapter--image-right, .chapter--image-left, .chapter--split { grid-template-columns: 1fr; }
  .chapter--image-left figure { order: 2; }
  .chapter--earth, .chapter--red { width: calc(100% + 28px); margin-left: -14px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .controls { align-self: flex-end; }
  .tree-shell { height: 68svh; }
  .map-shell { width: 100%; height: 62svh; }
  .gallery__grid { grid-template-columns: 1fr; }
  .gallery__wide { grid-column: auto; }
  .portrait-pair { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}