/* Notebook exploration. Everything is scoped to .explorer; the homepage does not load this file. */
.explorer{--paper:#fbf8f1;--desk:#e8dfce;--ink:#1e2b3f;--ink-2:#56627a;--line:rgba(30,43,63,.12);--accent:#e4572e;--accent-ink:#c4492a;--lift:0 1px 1px rgba(30,43,63,.05),0 8px 26px rgba(30,43,63,.09);height:100dvh;overflow:hidden;background:var(--desk);color:var(--ink);-webkit-tap-highlight-color:transparent}
.explorer #main{position:fixed;inset:0}
.explorer a:hover{color:inherit}
.explorer :is(a,button,summary):focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.explorer kbd{display:inline-block;font:600 11px/1 SUIT,system-ui,sans-serif;padding:3px 6px;border-radius:5px;background:rgba(30,43,63,.07);color:var(--ink-2);border:1px solid var(--line)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.nb-pill{background:rgba(251,248,241,.92);border:1px solid var(--line);box-shadow:var(--lift);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}

/* World */
#world{position:fixed;inset:0;overflow:hidden}
#world canvas{display:block;width:100%;height:100%;touch-action:none;cursor:pointer;outline:none}
#world canvas.is-dragging{cursor:grabbing}
#world::after{content:'';position:absolute;inset:0;pointer-events:none;z-index:1;background:radial-gradient(125% 95% at 50% 46%,transparent 60%,rgba(74,54,28,.14) 100%)}
#markers{position:absolute;inset:0;pointer-events:none;z-index:2}
.world-marker{position:absolute;left:0;top:0;margin-top:-12px;display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 13px 0 11px;border-radius:999px;border:1px solid var(--line);background:rgba(251,248,241,.95);box-shadow:var(--lift);color:var(--ink);font:600 13px/1 SUIT,system-ui,sans-serif;white-space:nowrap;cursor:pointer;pointer-events:auto;will-change:transform}
.world-marker::after{content:'';position:absolute;left:50%;bottom:-5px;width:8px;height:8px;margin-left:-4px;background:inherit;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transform:rotate(45deg)}
.world-marker:hover{background:#fff;border-color:rgba(30,43,63,.26)}
.marker-num{font-size:11px;font-weight:800;color:var(--accent);letter-spacing:.02em}

/* Top bar: home, notebook index, view tools */
.explorer .nb-top{position:fixed;top:14px;left:16px;right:16px;z-index:10;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;background:none;border:0;pointer-events:none}
.nb-top>*{pointer-events:auto}
.nb-home{justify-self:start;display:inline-flex;align-items:center;gap:10px;height:42px;padding:0 18px 0 15px;border-radius:999px;font-size:14px;color:var(--ink)}
.nb-home strong{font-weight:800;letter-spacing:-.02em}
.nb-home-sub{padding-left:10px;border-left:1px solid var(--line);font-size:12.5px;color:var(--ink-2)}
.nb-index{display:flex;gap:2px;padding:4px;border-radius:999px}
.nb-index button,.nb-tools button{height:34px;border:0;border-radius:999px;background:transparent;color:var(--ink-2);font:600 13px/1 SUIT,system-ui,sans-serif;white-space:nowrap;cursor:pointer;transition:background .18s,color .18s}
.nb-index button{display:inline-flex;align-items:center;gap:7px;padding:0 14px}
.nb-index button span{font-size:10.5px;font-weight:800;letter-spacing:.03em;color:var(--accent)}
.nb-index button:hover,.nb-tools button:hover{color:var(--ink);background:rgba(30,43,63,.06)}
.nb-index button[aria-current=true]{background:var(--ink);color:var(--paper)}
.nb-index button[aria-current=true] span{color:#ff9d7d}
.nb-tools{justify-self:end;display:flex;gap:2px;padding:4px;border-radius:999px}
.nb-tools button{padding:0 13px;font-size:12.5px}
.nb-tools button[aria-pressed=true]{background:rgba(228,87,46,.12);color:var(--accent-ink)}

/* Station card */
.nb-near{position:fixed;z-index:9;left:50%;bottom:20px;transform:translateX(-50%);display:flex;align-items:center;gap:20px;min-width:320px;max-width:min(560px,calc(100vw - 32px));padding:8px 8px 8px 20px;border-radius:18px;animation:near-in .28s ease-out}
.nb-near-copy{display:flex;flex-direction:column;gap:4px;min-width:0}
#nearby-kicker{font:800 11px/1.2 SUIT,system-ui,sans-serif;letter-spacing:.05em;color:var(--accent)}
#nearby-name{font:700 15px/1.35 SUIT,system-ui,sans-serif;letter-spacing:-.02em;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#inspect{margin-left:auto;flex:none;display:inline-flex;align-items:center;gap:10px;height:44px;padding:0 14px 0 18px;border:0;border-radius:12px;background:var(--ink);color:var(--paper);font:700 14px/1 SUIT,system-ui,sans-serif;cursor:pointer}
#inspect:hover{background:#2b3c58}
#inspect kbd{background:rgba(255,255,255,.14);border-color:transparent;color:rgba(251,248,241,.82);font-size:10.5px}
@keyframes near-in{from{opacity:0;translate:0 8px}to{opacity:1;translate:0 0}}

/* Footer */
.explorer .nb-foot{position:fixed;left:16px;right:16px;bottom:20px;z-index:8;display:flex;justify-content:space-between;align-items:flex-end;gap:16px;padding:0;border:0;font-size:12.5px;color:var(--ink-2);pointer-events:none}
.nb-foot>*{pointer-events:auto;padding:9px 14px;border-radius:999px;background:rgba(251,248,241,.84);border:1px solid var(--line);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
#status{max-width:min(420px,34vw);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nb-foot a{font-weight:700;color:var(--ink)}
.explorer:has(#nearby:not([hidden])) #status{opacity:0}

/* Reading panel */
.reading{position:fixed;z-index:20;top:72px;right:16px;bottom:16px;width:min(440px,calc(100vw - 32px));overflow:auto;overscroll-behavior:contain;padding:32px 34px 30px;border-radius:20px;border:1px solid var(--line);background-color:var(--paper);background-image:radial-gradient(rgba(102,120,148,.14) 1px,transparent 1.3px);background-size:18px 18px;box-shadow:0 2px 4px rgba(30,43,63,.05),0 26px 64px rgba(30,43,63,.18);animation:reading-in .34s cubic-bezier(.2,.8,.2,1)}
@keyframes reading-in{from{opacity:0;translate:18px 0}to{opacity:1;translate:0 0}}
.close-reading{position:sticky;top:0;float:right;z-index:1;width:38px;height:38px;margin:-12px -14px 0 12px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:20px;line-height:1;cursor:pointer}
.close-reading:hover{color:var(--ink);border-color:rgba(30,43,63,.28)}
.reading-kicker{margin:0 0 14px;font:800 12px/1.2 SUIT,system-ui,sans-serif;letter-spacing:.06em;color:var(--accent)}
.reading h2{margin:0 0 16px;font-size:27px;line-height:1.32;letter-spacing:-.035em;font-weight:800;color:var(--ink)}
.reading-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 18px!important;font-size:13px!important;font-weight:600;color:var(--ink-2)!important}
.reading-status{padding:3px 10px;border:1px solid rgba(228,87,46,.45);border-radius:999px;font-size:11.5px;color:var(--accent-ink)}
.reading p{margin:0 0 12px;font-size:15.5px;line-height:1.85;color:#2f3b52}
.reading p.reading-lede{margin-bottom:22px;font-size:17px;line-height:1.75;font-weight:500;color:var(--ink)}
.reading p a{color:var(--accent-ink);text-decoration:underline;text-underline-offset:3px}
.reading h3{display:flex;align-items:center;gap:10px;margin:30px 0 8px;font-size:16px;line-height:1.45;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
.reading h3::before{content:'';flex:none;width:14px;height:2px;background:var(--accent)}
.reading-tags{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 22px;padding:0;list-style:none}
.reading-tags li{padding:5px 12px;border:1px solid rgba(30,43,63,.18);border-radius:999px;font-size:12.5px;color:var(--ink-2);background:rgba(255,255,255,.6)}
.reading-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 8px;padding:16px 0;border-block:1px solid var(--line)}
.reading-facts div{display:flex;flex-direction:column-reverse;gap:3px}
.reading-facts dd{margin:0;font-size:21px;font-weight:800;letter-spacing:-.03em;color:var(--ink)}
.reading-facts dt{font-size:12px;color:var(--ink-2)}
.reading-links{display:flex;flex-direction:column;gap:8px;margin-top:28px}
.read-link{display:block;padding:13px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:700;color:var(--ink)}
.read-link:hover{border-color:rgba(30,43,63,.3)}
.read-link.is-primary{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.explorer .read-link.is-primary:hover{background:#2b3c58;color:#fff}
.reading-more{margin-top:12px;padding-top:10px;border-top:1px solid var(--line)}
.reading-more summary{padding:6px 0;font-size:13px;font-weight:700;color:var(--ink-2);cursor:pointer}
.read-link.is-quiet{padding:10px 2px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:none;font-size:13.5px;font-weight:600}

/* Help */
.help-panel{position:fixed;z-index:15;top:70px;right:16px;width:320px;padding:22px 22px 18px;border-radius:18px;background:rgba(251,248,241,.97)}
.help-panel h2{margin:0 0 12px;font-size:17px;letter-spacing:-.02em}
.help-keys{margin:0}
.help-keys div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
.help-keys dt{color:var(--ink);font-weight:600}
.help-keys dd{margin:0;color:var(--ink-2);text-align:right}
.help-keys kbd{margin-right:3px}
.help-motion{margin-top:14px;width:100%;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font:700 13px/1 SUIT,system-ui,sans-serif;cursor:pointer}
.help-motion[aria-pressed=true]{background:rgba(228,87,46,.1);color:var(--accent-ink);border-color:rgba(228,87,46,.3)}
.help-all{display:block;margin-top:12px;font-size:13px;font-weight:700;color:var(--ink)}
.only-touch{display:none!important}

/* Touch */
.nb-touch{display:none}
.stick{position:relative;width:116px;height:116px;border-radius:50%;border:1px solid rgba(30,43,63,.14);background:rgba(251,248,241,.6);box-shadow:var(--lift);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);touch-action:none}
.stick::before{content:'';position:absolute;inset:22px;border-radius:50%;border:1px dashed rgba(30,43,63,.18)}
.stick-knob{position:absolute;left:50%;top:50%;width:48px;height:48px;margin:-24px 0 0 -24px;border-radius:50%;background:var(--ink);box-shadow:0 4px 14px rgba(30,43,63,.32)}
#jump{width:68px;height:68px;border-radius:50%;border:0;background:var(--accent);color:#fff;font:800 14px/1 SUIT,system-ui,sans-serif;box-shadow:0 6px 18px rgba(228,87,46,.35);touch-action:manipulation;cursor:pointer}
#jump:active{transform:scale(.95)}

/* Loading and fallback */
#loading{position:absolute;inset:0;z-index:30;display:grid;place-content:center;justify-items:center;gap:16px;background:var(--desk);transition:opacity .4s}
#loading.is-done{opacity:0;pointer-events:none}
.loading-robot{width:68px;height:auto;animation:robot-bob 1.4s ease-in-out infinite}
.loading-title{margin:0;font-size:15px;font-weight:700;color:var(--ink-2)}
@keyframes robot-bob{50%{transform:translateY(-6px)}}
.fallback{position:fixed;inset:0;z-index:40;overflow:auto;background:var(--paper);padding:max(40px,6vw) 24px}
.fallback-inner{max-width:640px;margin:0 auto}
.fallback-home{display:inline-block;margin-bottom:30px;font-size:14px;font-weight:700}
.fallback h2{margin:0 0 10px;font-size:30px;letter-spacing:-.035em}
.fallback p{margin:0 0 26px;color:var(--ink-2)}
.fallback ul{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.fallback li a{display:flex;flex-direction:column;gap:3px;padding:15px 0;border-bottom:1px solid var(--line)}
.fallback li strong{font-size:16px}
.fallback li span{font-size:14px;color:var(--ink-2)}
.explore-error :is(.nb-index,.nb-tools,.nb-touch,.nb-foot,.nb-near,.reading,.help-panel){display:none!important}

@media (pointer:coarse){
 .nb-touch{position:fixed;z-index:9;left:16px;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));display:flex;justify-content:space-between;align-items:flex-end;pointer-events:none}
 .nb-touch>*{pointer-events:auto}
 .explorer .nb-foot{display:none}
 .nb-near{bottom:calc(150px + env(safe-area-inset-bottom))}
 .only-touch{display:inline!important}.help-keys .only-touch{display:flex!important}
 .only-pointer{display:none!important}
 .reading-open .nb-touch{display:none}
}
@media (max-width:1000px){
 .explorer .nb-top{grid-template-columns:1fr auto;row-gap:8px}
 .nb-index{grid-row:2;grid-column:1/-1;justify-self:center;max-width:100%;overflow-x:auto;scrollbar-width:none}
 .nb-index::-webkit-scrollbar{display:none}
 .help-panel{top:116px}
 .reading{top:120px}
}
@media (max-width:820px){
 .explorer .nb-top{top:10px;left:10px;right:10px}
 .nb-index{justify-self:stretch}
 .nb-index button{flex:1 0 auto;justify-content:center;padding:0 12px;font-size:12.5px}
 .nb-home{height:40px;padding:0 15px 0 13px}
 .nb-home-sub,.nb-tools #motion{display:none}
 .nb-tools button{padding:0 11px}
 .nb-near{left:10px;right:10px;transform:none;min-width:0;max-width:none;padding:8px 8px 8px 16px}
 #inspect kbd{display:none}
 .reading{top:auto;left:0;right:0;bottom:0;width:auto;max-height:64dvh;padding:26px 22px calc(26px + env(safe-area-inset-bottom));border-radius:20px 20px 0 0;border-bottom:0;animation-name:sheet-in}
 .reading h2{font-size:23px}
 .help-panel{top:110px;left:10px;right:10px;width:auto}
 .world-marker{height:28px;padding:0 11px 0 9px;font-size:12px}
 #status{max-width:52vw}
 .explorer:has(#nearby:not([hidden])) .nb-foot{visibility:hidden}
}
@keyframes sheet-in{from{opacity:0;translate:0 24px}to{opacity:1;translate:0 0}}
@media (prefers-reduced-motion:reduce){.loading-robot,.nb-near,.reading{animation:none}.nb-index button,.nb-tools button{transition:none}}