:root{
  --ink:#16324F; --text:#1A2633; --muted:#556372; --paper:#F6F8F7; --surface:#FFFFFF;
  --line:#D5DDE3; --signal:#F2B705; --route:#0F7173; --on-signal:#16324F;
  color-scheme:light;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){
  :root{ --ink:#E9EEF2; --text:#DCE4EA; --muted:#9FB0BF; --paper:#0F1E2E; --surface:#16283A;
    --line:#2A3F54; --signal:#F2B705; --route:#4FB3B5; color-scheme:dark; }
}
*,*::before,*::after{box-sizing:inherit}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 80px)}
body{margin:0;background:var(--paper);color:var(--text);
  font-family:"Archivo",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:1.0625rem;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:inherit}
:focus-visible{outline:3px solid var(--signal);outline-offset:3px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 1.25rem}
.muted{color:var(--muted)} .small{font-size:.875rem}
h1,h2,h3{color:var(--ink);line-height:1.08;margin:0 0 .6em;font-stretch:118%}
h1{font-size:clamp(2.4rem,7vw,5rem);font-weight:800;letter-spacing:-.02em;max-width:14ch}
h2{font-size:clamp(1.6rem,3.2vw,2.2rem);font-weight:750}
h3{font-size:1.25rem;font-weight:700}
p{max-width:65ch}

/* header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;display:flex;justify-content:space-between;align-items:center;
  gap:1rem;padding:.9rem 1.25rem;background:var(--paper);border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:.55rem;font-weight:800;font-stretch:118%;font-size:1.15rem;color:var(--ink);text-decoration:none;margin:0}
.dot{width:14px;height:14px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 3px var(--ink)}
.top nav{display:flex;gap:1.1rem;align-items:center;font-weight:600}
.top nav a{text-decoration:none}
.top nav a:hover{text-decoration:underline;text-underline-offset:4px}
.nav-cta{background:var(--ink);color:var(--paper)!important;padding:.45rem .9rem;border-radius:999px}
.nav-cta:hover{text-decoration:none!important;opacity:.9}
@media (max-width:560px){.top nav a:not(.nav-cta){display:none}}

/* hero */
.hero{padding:clamp(3rem,9vw,6.5rem) 0 2.5rem}
.mhero{padding:clamp(2.2rem,6vw,4rem) 0 1.5rem}
.lede{font-size:clamp(1.1rem,2vw,1.3rem);max-width:56ch}
.actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.75rem}
.btn{display:inline-block;font-weight:700;text-decoration:none;padding:.85rem 1.4rem;border-radius:999px;border:2px solid var(--ink);font-size:1rem}
.btn.primary{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.btn.primary:hover{filter:brightness(1.05)}
.btn.ghost{color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper)}

/* route: the 8 stops as a journey */
.route-wrap{margin-top:3rem;overflow-x:auto}
.route{list-style:none;margin:0;padding:1rem 0 .5rem;display:grid;grid-template-columns:repeat(8,minmax(92px,1fr));position:relative;min-width:760px}
.route::before{content:"";position:absolute;left:calc(100%/16);right:calc(100%/16);top:calc(1rem + 21px);height:4px;
  background:repeating-linear-gradient(90deg,var(--route) 0 14px,transparent 14px 22px)}
.route li a{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.6rem;text-decoration:none;position:relative}
.stop{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-weight:800;
  background:var(--surface);border:3px solid var(--route);color:var(--ink);transition:transform .15s}
.route li a:hover .stop{transform:scale(1.1)}
.route li.here .stop{background:var(--signal);border-color:var(--signal);color:var(--on-signal)}
.stop-name{font-weight:650;font-size:.92rem;line-height:1.25;max-width:12ch}
.small-route{margin-top:1.5rem}
@media (max-width:700px){
  .route-wrap{overflow:visible}
  .route{grid-template-columns:1fr;min-width:0;gap:.9rem;padding-left:.2rem}
  .route::before{left:21px;right:auto;top:1.5rem;bottom:1.5rem;width:4px;height:auto;
    background:repeating-linear-gradient(180deg,var(--route) 0 14px,transparent 14px 22px)}
  .route li a{flex-direction:row;text-align:left}
  .stop-name{max-width:none}
  .small-route{display:none}
}

/* sections */
.band{padding:clamp(2.5rem,6vw,4.5rem) 0}
.band.alt{background:var(--ink);color:var(--paper)}
.band.alt .muted{color:color-mix(in srgb,var(--paper) 75%,transparent)}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2rem}
.fact{font-size:2rem;font-weight:800;font-stretch:118%;margin:0 0 .2rem;color:var(--signal)}

.mods{list-style:none;padding:0;margin:2rem 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:0;border-top:2px solid var(--ink)}
.mod a{display:flex;flex-direction:column;height:100%;padding:1.4rem 1.2rem 1.4rem 0;text-decoration:none;border-bottom:1px solid var(--line)}
.mod a:hover h3{text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--signal);text-decoration-thickness:3px}
.mod-n{color:var(--route);font-weight:700;font-size:.9rem}
.mod h3{margin:.25rem 0 .5rem}
.mod p{margin:0 0 .8rem;color:var(--muted)}
.mod-meta{margin-top:auto;font-size:.85rem;font-weight:600}

.two{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
@media (max-width:800px){.two{grid-template-columns:1fr}}
.book,.side{background:var(--surface);border:2px solid var(--ink);border-radius:18px;padding:1.75rem}
.link{font-weight:700;text-decoration-color:var(--signal);text-decoration-thickness:3px;text-underline-offset:4px}

/* module pages */
.crumb{font-size:.9rem;color:var(--muted)} .crumb a{color:var(--muted)}
.video{position:relative;aspect-ratio:16/9;background:var(--surface);border:2px dashed var(--line);border-radius:14px;display:grid;place-items:center;overflow:hidden}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video.has-video{border:0;background:#000}
.learn{padding-left:1.2rem} .learn li{margin:.5rem 0}
.learn li::marker{color:var(--route)}
.pn{display:flex;justify-content:space-between;gap:1rem;padding-bottom:3rem}
.pn a{display:flex;flex-direction:column;text-decoration:none;font-weight:700;color:var(--ink);padding:1rem 1.2rem;border:1px solid var(--line);border-radius:12px;min-width:0}
.pn a:hover{border-color:var(--ink)}
.pn .next{text-align:right;margin-left:auto}

/* footer */
.foot{border-top:1px solid var(--line);padding:2.5rem 0 1.5rem;margin-top:1rem}
.foot-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:2rem;margin-bottom:1.5rem}
@media (max-width:700px){.foot-grid{grid-template-columns:1fr}}
.foot-h{font-weight:700;margin:0 0 .6rem;color:var(--ink)}
.socials{display:flex;flex-wrap:wrap;gap:.5rem}
.socials a{text-decoration:none;font-weight:600;font-size:.92rem;padding:.45rem .9rem;border:1.5px solid var(--ink);border-radius:999px;color:var(--ink)}
.socials a:hover{background:var(--ink);color:var(--paper)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}