/* cenusa-de-la-napoli: loess paper by day, ash-night by default when the system asks for dark. */
:root{
  --bg:#f1ebe0; --bg2:#e7dfd0; --surface:#faf6ee; --ink:#1d1a16; --ink2:#2e2922; --muted:#5a5248; --line:#c9bea9; --line-soft:#ddd3c1;
  --acc:#b4411c; --acc-ink:#9a3412; --focus:#1f4fd1; --tip-bg:#1d1a16; --tip-ink:#f6f1e6; --card:rgba(250,246,238,.95); --kick:#9a3412;
  --motif-ash:#9aa0a8;
  --stage-bg:#e9e2d4; --model-band:rgba(80,70,60,.12); --band:rgba(160,120,60,.10); --ash-strong:#4f5560; --loess:#d9c08b; --loess-dark:#c3a873; --soil:#a8683a; --cave:#7a6c5c; --cave-dark:#5c5044;
  --pill:rgba(29,26,22,.82); --pill-ink:#f6f1e6; --pill-ash:#4f5560; --pill-ash-ink:#fbf8f2;
  --m-sea:#c7d6de; --m-iso:rgba(40,44,52,.55); --m-vent:#c2410c; --m-vent-glow:rgba(234,88,12,.45); --m-lab:#2a251f; --m-halo:rgba(246,241,232,.9); --m-sea-lab:#4b6a80;
  --m-find:#fbf8f2; --m-find-ring:#1d1a16; --m-find-halo:rgba(29,26,22,.28); --m-ctx:#6b7280; --m-pill:rgba(29,26,22,.82); --m-pill-ink:#f6f1e6; --m-pill-iso:rgba(29,26,22,.62);
  --m-pill-find:#1d1a16; --m-pill-find-ink:#fbf8f2; --m-pill-me:#b4411c; --m-pill-me-ink:#fff;
  --to-top-bg:#f1ebe0; --to-top-fg:#1d1a16;
  --disp:"Fraunces",Georgia,serif; --serif:"Source Serif 4",Georgia,serif; --ui:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --vh:1vh; --stage-h:calc(var(--vh) * 100 - 44px);
  color-scheme:light;
}
html.dark{
  --bg:#0b0e13; --bg2:#11151c; --surface:#151a22; --ink:#ede7db; --ink2:#d8d1c3; --muted:#b0a898; --line:#2e3440; --line-soft:#1f252f;
  --acc:#ff9a52; --acc-ink:#ffb27a; --focus:#9db8ff; --tip-bg:#ede7db; --tip-ink:#0b0e13; --card:rgba(11,14,19,.88); --kick:#ffb27a;
  --motif-ash:#e9e3d6;
  --stage-bg:#0e1218; --model-band:rgba(240,232,215,.10); --band:rgba(255,236,200,.05); --ash-strong:#f1ece2; --loess:#cdb27a; --loess-dark:#a88f5c; --soil:#a2683d; --cave:#5d5246; --cave-dark:#3e362e;
  --pill:rgba(14,16,20,.84); --pill-ink:#efe9de; --pill-ash:#f4efe6; --pill-ash-ink:#17140f;
  --m-sea:#0b111b; --m-iso:rgba(255,250,240,.5); --m-vent:#ffb067; --m-vent-glow:rgba(255,110,40,.55); --m-lab:#e9e3d6; --m-halo:rgba(8,10,14,.86); --m-sea-lab:#8fa6bf;
  --m-find:#fffaf0; --m-find-ring:#1a1712; --m-find-halo:rgba(10,10,12,.55); --m-ctx:#9aa0a8; --m-pill:rgba(14,16,20,.84); --m-pill-ink:#efe9de; --m-pill-iso:rgba(14,16,20,.66);
  --m-pill-find:#fbf7ee; --m-pill-find-ink:#17140f; --m-pill-me:#ff9a52; --m-pill-me-ink:#1b120a;
  --to-top-bg:#0b0e13; --to-top-fg:#ede7db;
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
svg[hidden]{display:none}
html{-webkit-text-size-adjust:100%;scroll-padding-top:56px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.1rem/1.62 var(--serif);text-rendering:optimizeLegibility}
a{color:var(--acc-ink);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--bg);padding:.5rem 1rem;z-index:50}
.skip:focus{left:8px;top:8px}
h1,h2,h3{font-family:var(--disp);font-weight:500;letter-spacing:-.012em;line-height:1.12;margin:0 0 .55em}
h1{font-size:clamp(1.9rem,2.6vw + .9rem,3.05rem);font-variation-settings:"opsz" 130;font-weight:430;text-wrap:balance}
h2{font-size:clamp(1.35rem,1.2vw + 1rem,1.85rem);font-variation-settings:"opsz" 72;text-wrap:balance;position:relative}
h3{font-size:1.18rem;margin-top:1.5em}
p{margin:0 0 1em}
.nw{white-space:nowrap}
.anchor{position:absolute;left:-1.1em;opacity:0;text-decoration:none;color:var(--muted);font-weight:400}
h2:hover .anchor,.anchor:focus{opacity:1}
.kicker{font:600 .78rem/1.35 var(--ui);letter-spacing:.07em;text-transform:uppercase;color:var(--kick);margin:0 0 .9rem}
.kicker a{color:inherit}
.note{font:400 .88rem/1.5 var(--ui);color:var(--muted)}
.wrap{max-width:42rem;margin:0 auto;padding:0 16px}

/* topbar: slim, takes the night colours */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:.9rem;height:44px;padding:0 max(16px,env(safe-area-inset-left));background:var(--bg);border-bottom:1px solid var(--line-soft);font:500 .88rem/1 var(--ui)}
.home{display:flex;align-items:center;gap:.45rem;color:var(--ink);text-decoration:none;white-space:nowrap}
.home .motif{width:22px;height:22px;color:var(--ink)}
.topnav{display:flex;gap:1rem;overflow:hidden;min-width:0}
.topnav a{color:var(--ink2);text-decoration:none;white-space:nowrap}
.topnav a:hover{color:var(--ink);text-decoration:underline}
.spacer{flex:1}
.chip{color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:.36rem .7rem;min-height:32px;display:inline-flex;align-items:center}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px}
.progress i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--acc),var(--ash-strong));transform-origin:0 50%;transform:scaleX(0)}
@media (max-width:980px){.topnav{display:none}}
@media (pointer:coarse){.icon-btn{width:44px;height:44px}.chip{min-height:44px}}

/* rail: a hairline of dots at the far edge */
.rail{position:fixed;right:8px;top:50%;transform:translateY(-50%);z-index:20;display:flex;flex-direction:column;gap:6px;opacity:.75}
.rail-dot{position:relative;display:block;width:14px;height:14px}
.rail-dot .dot{position:absolute;inset:5px;border-radius:50%;background:var(--line)}
.rail-dot[aria-current] .dot{background:var(--acc);inset:4px}
.rail-label{position:absolute;right:22px;top:50%;transform:translateY(-50%);white-space:nowrap;font:500 .78rem/1 var(--ui);background:var(--tip-bg);color:var(--tip-ink);padding:.35rem .5rem;border-radius:4px;opacity:0;pointer-events:none}
.rail-dot:hover .rail-label,.rail-dot:focus .rail-label{opacity:1}
@media (max-width:1180px){.rail{display:none}}

/* the story: a pinned globe, text passing beside it (desktop) or below it (phone) */
.story{position:relative;display:grid;grid-template-columns:minmax(0,26rem) minmax(0,1fr);min-width:0;grid-template-areas:"steps stage"}
.stage{grid-area:stage;position:sticky;top:44px;height:var(--stage-h);margin:0;overflow:hidden;background:var(--stage-bg)}
.stage canvas{position:absolute;inset:0;display:block;width:100%;height:100%;cursor:grab;opacity:0;transition:opacity .6s ease;pointer-events:none}
.stage[data-mode=map] #map,.stage[data-mode=cliff] #cliff,.stage[data-mode=panel] #panel{opacity:1;pointer-events:auto}
.stage[data-mode=cliff] #cliff{cursor:ew-resize}.stage[data-mode=panel] #panel{cursor:default}
.stage[data-mode=cliff] .legend,.stage[data-mode=panel] .legend,.stage[data-mode=cliff] .zoom,.stage[data-mode=panel] .zoom{display:none}
.stage canvas:active{cursor:grabbing}
.steps{grid-area:steps;position:relative;z-index:2;padding:0 0 30vh 0;min-width:0}
.step{min-height:calc(var(--vh) * 92);display:flex;align-items:center;padding:2rem 1.2rem 2rem max(16px,2.2vw)}
.step .card{background:var(--card);border:1px solid var(--line-soft);border-radius:14px;padding:1.3rem 1.4rem .6rem;max-width:28rem;box-shadow:0 10px 40px rgba(0,0,0,.08)}
.step.intro{min-height:calc(var(--stage-h));align-items:center}
.step.intro .card{background:transparent;border:0;box-shadow:none;padding:1rem .2rem}
.step.intro h1{max-width:15ch}
.deck{font-size:1.1rem;line-height:1.55;color:var(--ink2)}
.hint{font:500 .85rem/1.3 var(--ui);color:var(--muted);margin-top:1.4rem}
.step.explore{min-height:calc(var(--vh) * 100);align-items:flex-start;padding-top:4rem}
.step.explore .card{max-width:30rem;width:100%}
.step p{font-size:1.04rem}

/* stage furniture */
.legend{position:absolute;left:14px;bottom:14px;display:flex;flex-direction:column;gap:.3rem;padding:.55rem .7rem;border-radius:10px;background:var(--card);border:1px solid var(--line-soft);font:500 .78rem/1.25 var(--ui);color:var(--ink2);max-width:min(18rem,60%);pointer-events:none}
.lg{display:flex;align-items:center;gap:.5rem}
.sw{width:12px;height:12px;border-radius:50%}
.sw.find{background:var(--m-find);box-shadow:0 0 0 1.6px var(--m-find-ring)}
.sw.reported{border:1.8px solid var(--ink);background:transparent}
.sw.context{background:var(--m-ctx)}
.sw.iso{width:18px;height:0;border-radius:0;border-top:1.4px solid var(--ink);opacity:.7}
.legend[data-scene=hero] .lg[data-k=reported],.legend[data-scene=hero] .lg[data-k=context]{display:none}
.sw{display:inline-block;width:18px;height:3px;border-radius:2px;flex:none}
.zoom{position:absolute;right:14px;bottom:14px;display:flex;gap:.4rem;align-items:center}
.zb{min-width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:500 1.15rem/1 var(--ui);cursor:pointer;padding:0 .7rem}
.zb.reset{font-size:.85rem}
@media (pointer:coarse){.zb{min-width:44px;height:44px}}
.pop{position:absolute;z-index:5;width:240px;padding:.7rem .8rem .7rem;border-radius:12px;background:var(--card);border:1px solid var(--line);font:400 .85rem/1.35 var(--ui);color:var(--ink);display:flex;flex-direction:column;gap:.25rem;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.pop strong{font-weight:600;padding-right:1.4rem}
.pop .pc{color:var(--muted);font-size:.8rem}
.pop .x{position:absolute;right:6px;top:4px;border:0;background:transparent;color:var(--ink);font-size:1.3rem;width:32px;height:32px;cursor:pointer}
.pop .btn{align-self:flex-start;margin-top:.3rem}

/* charts and tables inside the steps */

/* search and the airport card */
.search{display:grid;gap:.5rem;margin:1rem 0}
.slab{display:block;font:600 .85rem/1.3 var(--ui);color:var(--ink2)}
.combo{position:relative}
input[type=search]{width:100%;font:500 1rem/1.2 var(--ui);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:.7rem .8rem;min-height:44px}
#sugg{position:absolute;z-index:25;left:0;right:0;top:100%;margin:.25rem 0 0;padding:.25rem;list-style:none;background:var(--surface);border:1px solid var(--line);border-radius:10px;max-height:18rem;overflow:auto;box-shadow:0 8px 24px rgba(0,0,0,.18)}
#sugg li{display:flex;flex-direction:column;padding:.45rem .6rem;border-radius:6px;cursor:pointer;font:400 .95rem/1.3 var(--ui)}
#sugg li span{font-size:.8rem;color:var(--muted)}
#sugg li[aria-selected=true],#sugg li:hover{background:var(--bg2)}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.55rem 1rem;border-radius:999px;border:1px solid var(--ink);background:var(--ink);color:var(--bg);font:600 .92rem/1 var(--ui);cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line);justify-self:start}
.btn.small{min-height:36px;padding:.4rem .8rem;font-size:.85rem}

/* share row */
.share-row{display:flex;align-items:center;gap:.45rem;flex-wrap:wrap;margin-top:1rem}
.share-row .lbl{font:500 .85rem/1 var(--ui);color:var(--muted);margin-right:.2rem}
.sh{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer}
.sh svg{width:18px;height:18px}
.sh:hover,.sh:focus-visible{color:var(--acc);border-color:var(--acc)}
@media (pointer:coarse){.sh{width:44px;height:44px}}
.status{font:400 .85rem/1.3 var(--ui);color:var(--muted);min-height:1.2em;margin:.3rem 0 0}

/* after the story */
.block{padding:3rem 0;position:relative;z-index:3;background:var(--bg)}
.tinted{background:var(--bg2)}
.plain{list-style:none;padding:0}
.sources li{font:400 .9rem/1.45 var(--ui);margin:.35rem 0}
footer{display:flex;flex-wrap:wrap;gap:.5rem 1.4rem;justify-content:center;padding:2rem 16px 3rem;font:400 .85rem/1.4 var(--ui);color:var(--muted);background:var(--bg);position:relative;z-index:3}
footer a{color:var(--ink2)}
.hpage main{padding:3rem 0}

/* phone: the globe keeps the top of the screen, the text passes below it */
@media (max-width:860px){
  .story{grid-template-columns:minmax(0,1fr);grid-template-areas:"main"}
  .stage{grid-area:main;align-self:start;height:calc(var(--vh) * 40);top:44px;z-index:4;box-shadow:0 1px 0 var(--line-soft)}
  .steps{grid-area:main;min-width:0;padding-top:calc(var(--vh) * 40);padding-bottom:12vh}
  .step{min-height:calc(var(--vh) * 62);padding:1rem 12px;align-items:flex-start}
  .step .card{max-width:none;width:100%;padding:1.05rem 1rem .4rem;box-shadow:none}
  .step.intro{min-height:auto;padding-top:.6rem}
  .step.intro .card{padding:.6rem .1rem}
  .step.intro h1{max-width:none}
  .hint{display:none}
  .legend{display:none}
  .zoom{right:8px;bottom:8px}
  .pop{width:210px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media print{.stage,.rail,.topbar,.zoom,.legend{display:none}.story{display:block}}

/* the cut control and the cards */
.cutbox{margin:.6rem 0 .4rem;padding:.7rem .8rem;border:1px solid var(--line-soft);border-radius:12px;background:var(--surface)}
.cutbox input{width:100%;accent-color:var(--acc);min-height:36px}
.pop h3{margin:0 0 .15rem;font:600 1.02rem/1.25 var(--ui);padding-right:1.6rem}
.pop .kind{font:600 .72rem/1.2 var(--ui);letter-spacing:.06em;text-transform:uppercase;color:var(--kick)}
.pop dl{margin:.3rem 0 0;display:grid;grid-template-columns:auto 1fr;gap:.2rem .6rem;font-size:.82rem}
.pop dt{color:var(--muted)} .pop dd{margin:0}
.pop .src{font-size:.78rem;color:var(--muted)} .pop .src a{color:inherit}
.pop{width:300px}
.result .big{font:500 1.35rem/1.25 var(--disp);margin:.2rem 0 .4rem}
.result p{margin:.2rem 0;font:400 .95rem/1.45 var(--ui)}
.result .note{font-size:.82rem}
@media (max-width:860px){.pop{width:min(300px,calc(100vw - 32px))}}

.step{scroll-margin-top:52px}
@media (max-width:860px){.step{scroll-margin-top:calc(var(--vh) * 40 + 50px)}}

.rail{display:none}
.result p{font-size:1rem}
.result .note{font-size:.88rem}
@media (max-width:860px){.stage{box-shadow:0 1px 0 var(--line-soft),0 26px 22px 4px var(--bg)}.steps .step:not(.intro){padding-top:2.2rem}}