:root{--n1:#061f33;--n2:#0a3a52;--ink:#eef6f8;--soft:#b9d3dc;--glass:#8fe0d6;--sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:radial-gradient(900px 500px at 90% -10%,rgba(143,224,214,.14),transparent 60%),linear-gradient(175deg,var(--n1) 0%,var(--n2) 100%) fixed;color:var(--ink);font:18px/1.55 var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden}
a{color:var(--glass)}
kbd{font:600 .8em var(--sans);border:1px solid rgba(255,255,255,.35);border-radius:6px;padding:1px 7px;background:rgba(255,255,255,.06)}
[lang="ga"]{font-family:var(--serif);font-style:italic}
.tbar{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;gap:14px;padding:10px 20px;background:linear-gradient(180deg,rgba(6,31,51,.92),rgba(6,31,51,0))}
.home{display:flex;align-items:center;gap:9px;color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}
.mk{width:28px;height:28px;color:var(--glass);stroke-width:2.2}
.ttl{color:var(--soft);font-size:14px;margin-left:6px}
.tlinks{margin-left:auto;display:flex;gap:4px}.tlinks a{color:var(--ink);text-decoration:none;font-weight:600;font-size:15px;padding:6px 10px;border-radius:9px}.tlinks a:hover{background:rgba(255,255,255,.1)}
#deck{position:fixed;inset:0;bottom:0}
.step{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:64px 6vw 96px;opacity:0;visibility:hidden;transform:translateX(30px);transition:opacity .35s ease,transform .35s ease,visibility 0s .35s;overflow-y:auto}
.step.on{opacity:1;visibility:visible;transform:none;transition:opacity .35s ease,transform .35s ease}
.step.before{transform:translateX(-30px)}
.inner{width:100%;max-width:1100px;margin:auto}
.inner.center{text-align:center}
.step .notes{display:none}
.kick{margin:0 0 10px;font-size:15px;letter-spacing:1.6px;text-transform:uppercase;color:var(--soft)}
.kick i{text-transform:none;letter-spacing:.3px;font-size:19px;color:var(--glass)}
h1{font:500 clamp(36px,5.6vw,72px)/1.08 var(--serif);margin:0 0 18px;letter-spacing:-.5px}
h2{font:500 clamp(30px,4.2vw,54px)/1.12 var(--serif);margin:0 0 22px;letter-spacing:-.3px;max-width:1000px}
h2.sm{font-size:clamp(24px,2.6vw,34px)}
.lead{font-size:clamp(19px,2vw,26px);color:var(--soft);max-width:860px;margin:0 auto 20px}
.who{font-size:clamp(17px,1.7vw,22px);color:var(--ink);font-weight:600;margin:0 0 14px}
.hint{color:var(--soft);font-size:15px;margin-top:26px}
.big-dolphin{width:clamp(90px,11vw,150px);height:clamp(90px,11vw,150px);color:var(--glass);stroke-width:1.6;display:block;margin:0 auto 10px}
.pts{margin:0 0 18px;padding-left:1.1em;font-size:clamp(18px,1.75vw,24px);max-width:1000px}
.pts li{margin:0 0 12px}
.pts b{color:#fff}
.q{font:italic clamp(22px,2.4vw,32px)/1.3 var(--serif);color:var(--glass);margin:18px 0}
.plain,.caveat{font-size:clamp(17px,1.5vw,21px);color:var(--soft);max-width:1000px}
.plain b,.caveat b{color:#fff}
.caveat{border-left:4px solid #f2994a;padding:6px 0 6px 16px}
.more{font-size:17px;margin:18px 0 0}.more a{font-weight:650}
.nums{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 0 24px}
.nums div{background:rgba(255,255,255,.06);border:1px solid rgba(143,224,214,.25);border-radius:18px;padding:16px 20px}
.nums b{display:block;font:500 clamp(30px,3.6vw,48px)/1.05 var(--serif);color:var(--glass)}
.nums b small{font:600 .42em var(--sans);color:var(--soft)}
.nums span{font-size:clamp(15px,1.3vw,18px);color:var(--soft)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}.btns.center{justify-content:center;margin:20px 0}
.b{display:inline-block;padding:14px 24px;border-radius:14px;background:var(--ink);color:var(--n1);text-decoration:none;font-weight:700;font-size:18px}
.b.ghost{background:transparent;color:var(--ink);border:1.5px solid rgba(255,255,255,.5)}
.small{font-size:16px;color:var(--soft)}.dim{max-width:820px;margin:26px auto 0;font-size:14px}
.url{font:500 clamp(22px,2.6vw,34px) var(--serif);color:var(--glass);margin:6px 0 4px}
/* map step */
.step.wide{padding-left:3vw;padding-right:3vw}
.split{display:grid;grid-template-columns:1.7fr 1fr;gap:26px;align-items:center;max-width:1400px}
.mapcol{display:flex;flex-direction:column;height:min(72vh,720px)}
.framebar{display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,.08);border-radius:14px 14px 0 0;padding:7px 14px;font-size:15px}
.framebar i{color:var(--glass)}.framebar a{color:#fff;font-weight:650;text-decoration:none;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:3px 12px}
.frame{flex:1;border-radius:0 0 14px 14px;overflow:hidden;background:#dfeaee}
.frame iframe{width:100%;height:100%;border:0;display:block}
.side p{font-size:clamp(17px,1.45vw,20px);color:var(--soft)}
.legend{list-style:none;padding:0;margin:0 0 14px}
.legend li{display:flex;align-items:center;gap:10px;font-size:clamp(17px,1.45vw,20px);margin:7px 0;font-weight:600}
.legend li span{color:var(--soft);font-weight:400}
.legend i{width:20px;height:20px;border-radius:50%;flex:none;box-shadow:inset 0 0 0 1px rgba(0,0,0,.2)}
.legend i.prov{opacity:.6;outline:2px dashed #e0c25a;outline-offset:2px}
/* sampling */
.cols{display:grid;grid-template-columns:1fr 1.3fr;gap:30px;align-items:start}
.daybars div{display:grid;grid-template-columns:52px 1fr 54px;align-items:center;gap:12px;margin:12px 0}
.daybars span{font-weight:650;font-size:19px}
.daybars b{display:block;height:24px;border-radius:12px;background:linear-gradient(90deg,#3fb6b0,var(--glass));min-width:6px}
.daybars i{font-style:normal;font-weight:700;font-size:20px}
/* timeline */
.timeline{list-style:none;padding:0;margin:0 0 20px;border-left:3px solid rgba(143,224,214,.45)}
.timeline li{position:relative;padding:4px 0 14px 22px;font-size:clamp(18px,1.6vw,22px)}
.timeline li::before{content:"";position:absolute;left:-9px;top:12px;width:15px;height:15px;border-radius:50%;background:var(--glass)}
.timeline b{display:inline-block;min-width:150px;color:#fff}.timeline span{color:var(--soft)}
/* controls */
.ctrl{position:fixed;left:0;right:0;bottom:22px;z-index:20;background:linear-gradient(180deg,rgba(8,46,68,0),rgba(8,46,68,.92) 35%);display:flex;align-items:center;gap:10px;padding:8px 16px}
.ctrl button{background:rgba(255,255,255,.1);color:var(--ink);border:1px solid rgba(255,255,255,.3);border-radius:12px;min-width:48px;height:44px;font:600 16px var(--sans);cursor:pointer;padding:0 14px}
.ctrl button:hover{background:rgba(255,255,255,.2)}
.ctrl button[aria-pressed="true"]{background:var(--glass);color:var(--n1)}
.ctrl button:focus-visible,.b:focus-visible,a:focus-visible{outline:3px solid #ffd479;outline-offset:2px}
.prog{flex:1;height:5px;background:rgba(255,255,255,.15);border-radius:3px;overflow:hidden}
#bar{height:100%;width:0;background:var(--glass);transition:width .3s}
#count{font-size:14px;color:var(--soft);min-width:56px;text-align:center}
.notespanel{position:fixed;left:50%;transform:translateX(-50%);bottom:84px;z-index:30;width:min(900px,94vw);max-height:40vh;overflow:auto;background:rgba(3,16,27,.96);border:1px solid rgba(143,224,214,.4);border-radius:16px;padding:14px 20px;box-shadow:0 20px 50px rgba(0,0,0,.5);font-size:17px}
.notespanel p{margin:6px 0}.notespanel b{color:var(--glass)}
.notespanel .np-h{font-size:12px;letter-spacing:1.4px;text-transform:uppercase;color:var(--soft);margin:0 0 4px}
.disclaimer{position:fixed;left:0;right:0;bottom:0;z-index:40;background:color-mix(in srgb,#b45309 92%,transparent);color:#fff;font:500 11px/1.3 var(--sans);text-align:center;padding:3px 10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:860px){
 body{font-size:16px}
 .step{padding:58px 18px 104px;align-items:flex-start}
 .split,.cols{grid-template-columns:1fr}
 .mapcol{height:56vh}
 .nums{grid-template-columns:1fr;gap:10px}
 .nums div{padding:10px 14px}
 .ttl{display:none}
 .ctrl{bottom:30px}.ctrl button{min-width:44px;padding:0 10px}
 #fsBtn{display:none}
 .disclaimer{white-space:normal;font-size:10px;padding:2px 8px}
}
@media (prefers-reduced-motion:reduce){.step{transition:none}}

#count{background:none;border:0;cursor:pointer;color:var(--soft);font:600 14px var(--sans);min-width:64px}
#count:hover{color:#fff}
.np-t{font-size:13px;color:var(--soft);margin:8px 0 0;border-top:1px solid rgba(255,255,255,.12);padding-top:6px}
.np-t b{color:#fff;font-variant-numeric:tabular-nums}
.np-t button{background:none;border:1px solid rgba(255,255,255,.3);color:var(--soft);border-radius:6px;font-size:12px;cursor:pointer;padding:0 6px}
.overview{position:fixed;inset:0;z-index:50;background:rgba(3,16,27,.82);display:flex;align-items:center;justify-content:center;padding:20px}
.overview[hidden]{display:none}
.ov-in{background:#0a2d42;border:1px solid rgba(143,224,214,.4);border-radius:18px;padding:18px 26px;width:min(720px,94vw);max-height:84vh;overflow:auto}
.ov-h{margin:0 0 8px;font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:var(--soft)}
.ov-in ol{margin:0;padding-left:1.6em;columns:2;column-gap:30px;font-size:19px}
.ov-in li{margin:5px 0;break-inside:avoid}
.ov-in a{color:var(--ink);text-decoration:none}.ov-in a:hover,.ov-in a.cur{color:var(--glass);text-decoration:underline}
@media (max-width:600px){.ov-in ol{columns:1}}
.np-tip{opacity:.7}
.pa-credit{font-size:12.5px;margin-top:6px}.pa-credit a{color:inherit;text-decoration:underline;text-underline-offset:2px}
.dim.pa-credit{margin-top:8px}