/* The Universe: Wonder Weekly.
   Light star-chart paper outside, deep sky only inside contained windows.
   Fraunces (display), Atkinson Hyperlegible (text), IBM Plex Mono (instrument readouts). */
:root{
  --paper:#F8F8FD; --white:#FFFFFF; --tint:#EFEFFB; --tint2:#E4E4F6;
  --ink:#0B0A2E; --ink2:#2B2A55; --mut:#4F4E76; --line:#DCDCEE;
  --accent:#4338CA; --accent-d:#3730A3; --accent2:#8B93E8;
  --deep:#0B0A2E; --deep2:#17145A; --gold:#F2C46D;
  --on-deep:#F1F1FF; --on-deep-mut:#BDBFEC;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --wrap:1240px; --gut:clamp(16px,3vw,32px); --r:24px; --r-s:16px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;color:var(--ink);font:17px/1.62 var(--sans);-webkit-font-smoothing:antialiased;
  background-color:var(--paper);
  background-image:radial-gradient(circle at 1px 1px,#D9D9F0 1px,transparent 1.4px);
  background-size:30px 30px;overflow-x:hidden}
img,svg,video,canvas{display:block;max-width:100%}
img{height:auto}
a{color:inherit}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.015em;line-height:1.12;margin:0;
  font-variation-settings:"opsz" 96}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:6px}
.window :focus-visible,.zoom :focus-visible,.drop :focus-visible,.aperture :focus-visible{outline-color:var(--gold)}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:12px 18px;z-index:200;border-radius:0 0 10px 0}
.skip:focus{left:0}
.eyebrow{display:inline-block;font:500 12px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin:0 0 14px}
.eyebrow-gold{color:var(--gold)}
.mono-label{font:500 11.5px/1.3 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--mut)}
.caption{font:400 12.5px/1.4 var(--mono);color:var(--mut);margin-top:12px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:14px 26px;
  font:700 15px/1 var(--sans);text-decoration:none;border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s,color .2s,border-color .2s}
.btn:hover{transform:translateY(-2px)}
.btn-p{background:var(--ink);color:#fff}
.btn-p:hover{background:var(--accent-d)}
.btn-gold{background:transparent;color:var(--gold);border-color:rgba(242,196,109,.6);padding:11px 20px;font-size:14px}
.btn-gold:hover{background:var(--gold);color:var(--deep)}

/* ---------------------------------------------------------------- top bar + launcher */
.topbar{font-size:13px;color:var(--mut);border-bottom:1px solid var(--line);background:rgba(255,255,255,.7)}
.topbar-row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding-block:8px}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.launch{position:relative;flex:none}
.launch summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink);font-weight:700;font-size:13px}
.launch summary::-webkit-details-marker{display:none}
.launch summary::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(67,56,202,.16)}
.launch summary::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.launch[open] summary::after{transform:rotate(225deg) translateY(-1px)}
.launch summary:hover{border-color:var(--accent)}
.launchpanel{position:absolute;right:0;top:calc(100% + 10px);z-index:120;background:#fff;color:var(--ink);border:1px solid var(--line);
  border-radius:20px;box-shadow:0 30px 80px rgba(11,10,46,.18);padding:20px;width:min(calc(100vw - 32px),660px);
  display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:4px 16px}
.launchpanel h4{grid-column:1/-1;font:500 11px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--mut);margin:10px 0 4px}
.launchpanel h4:first-child{margin-top:0}
.launchpanel a{display:block;padding:7px 10px;border-radius:10px;font-size:14.5px;text-decoration:none}
.launchpanel a:hover{background:var(--tint);color:var(--accent-d)}
.launchpanel a[aria-current="page"]{background:var(--tint);font-weight:700;color:var(--accent-d)}

/* ---------------------------------------------------------------- masthead */
.mast-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px;padding-block:18px 14px}
.logo-link{display:inline-block;line-height:0;border-radius:12px}
.mast-logo .logo{width:136px;height:auto}
.mast-mid{text-align:center}
.mast-kicker{font:500 13px/1 var(--serif);letter-spacing:.62em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;padding-left:.62em}
.mast-tag{font:400 clamp(26px,3.6vw,46px)/1.05 var(--serif);letter-spacing:-.02em;font-variation-settings:"opsz" 144}
.mast-tag em{font-style:italic;color:var(--accent)}
.mast-strap{max-width:24ch;font-size:13.5px;color:var(--mut);text-align:right;line-height:1.45}
@media(max-width:900px){
  .mast-row{grid-template-columns:auto 1fr;gap:16px}
  .mast-strap{display:none}
  .mast-mid{text-align:left}
  .mast-kicker{letter-spacing:.42em;padding-left:0}
  .mast-logo .logo{width:92px}
}

/* sticky section deck */
.deck{position:sticky;top:0;z-index:90;background:rgba(248,248,253,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.deck-row{display:flex;align-items:center;gap:18px;min-height:58px}
.deck-logo .logo{width:34px;height:34px}
.deck-links{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0;-webkit-mask-image:linear-gradient(90deg,#000 92%,transparent);mask-image:linear-gradient(90deg,#000 92%,transparent)}
.deck-links::-webkit-scrollbar{display:none}
.deck-links a{flex:none;font:500 12.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;text-decoration:none;color:var(--ink2);
  padding:10px 12px;border-radius:999px;transition:background .2s,color .2s}
.deck-links a:hover{background:var(--tint);color:var(--accent-d)}
.deck-links a[aria-current="page"]{background:var(--ink);color:#fff}
.motion{flex:none;display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:8px 13px;font:500 11.5px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);cursor:pointer}
.motion:hover{border-color:var(--accent);color:var(--accent-d)}
.motion-ico{width:10px;height:10px;position:relative}
.motion-ico::before,.motion-ico::after{content:"";position:absolute;top:0;width:3px;height:10px;background:currentColor;border-radius:1px}
.motion-ico::before{left:1px}.motion-ico::after{right:1px}
.motion[aria-pressed="true"] .motion-ico::before{left:1px;width:0;height:0;background:none;border-left:9px solid currentColor;border-top:5px solid transparent;border-bottom:5px solid transparent;border-radius:0}
.motion[aria-pressed="true"] .motion-ico::after{display:none}
.orbit{flex:none;position:relative;width:36px;height:36px}
.orbit svg{width:36px;height:36px;transform:rotate(-90deg)}
.orbit circle{fill:none;stroke-width:1.5}
.orbit-track{stroke:var(--line)}
.orbit-arc{stroke:var(--accent);stroke-dasharray:88;stroke-dashoffset:88;stroke-linecap:round}
.orbit-sun{fill:var(--gold)!important;stroke:none}
.orbit-dot{position:absolute;left:50%;top:50%;width:7px;height:7px;margin:-3.5px;border-radius:50%;background:var(--accent);
  transform:rotate(var(--o,0deg)) translateY(-14px)}
@media(max-width:700px){.motion-txt{display:none}.motion{padding:9px}.orbit{display:none}.deck-row{gap:10px}}

/* ---------------------------------------------------------------- shared section furniture */
.sec{padding:clamp(64px,9vw,120px) 0 0}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head h2{font-size:clamp(30px,4.4vw,54px);font-variation-settings:"opsz" 144}
.dek{color:var(--mut);font-size:18px;margin-top:16px;max-width:64ch}
html.js:not(.still) [data-rise]{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
html.js:not(.still) [data-rise].in{opacity:1;transform:none}

/* video boxes: the poster always shows; the video fades in only once it is truly playing */
.vid{position:absolute;inset:0;overflow:hidden}
.vid img,.vid video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.vid video{opacity:0;transition:opacity 1.2s}
.vid.is-playing video{opacity:1}

/* ---------------------------------------------------------------- hero: the observatory window */
.obs{padding-top:clamp(18px,3vw,34px)}
.obs-grid{display:grid;grid-template-columns:minmax(0,1.75fr) minmax(0,1fr);gap:clamp(18px,2.4vw,32px);align-items:stretch}
.window{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--r);background:var(--deep);color:var(--on-deep);
  min-height:clamp(520px,76vh,760px);display:flex;align-items:flex-end;box-shadow:0 40px 90px -40px rgba(11,10,46,.55)}
.window-vid{z-index:-3}
.window-vid img,.window-vid video{filter:grayscale(1) contrast(1.15) brightness(.85);mix-blend-mode:screen;opacity:.55;
  animation:kb 38s ease-in-out infinite alternate}
.window::before{content:"";position:absolute;inset:0;z-index:-4;
  background:radial-gradient(120% 90% at 78% 10%,#2C2690 0,var(--deep2) 35%,var(--deep) 75%)}
.window::after{content:"";position:absolute;inset:0;z-index:-2;mix-blend-mode:color;background:linear-gradient(160deg,#4338CA,#0B0A2E 70%)}
@keyframes kb{from{transform:scale(1.14) translate(-1.5%,1%)}to{transform:scale(1.02) translate(1.5%,-1%)}}
.stars{position:absolute;inset:0;z-index:-1;width:100%;height:100%}
.window-shade{position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(180deg,rgba(11,10,46,0) 35%,rgba(11,10,46,.86) 100%)}
.window-hint{position:absolute;top:22px;right:24px;display:flex;align-items:center;gap:10px;font:500 11px/1 var(--mono);letter-spacing:.16em;
  text-transform:uppercase;color:var(--on-deep-mut);pointer-events:none}
.hint-dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 rgba(242,196,109,.7);animation:ping 2.4s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(242,196,109,0)}100%{box-shadow:0 0 0 0 rgba(242,196,109,0)}}
.window-copy{position:relative;padding:clamp(24px,4vw,52px);max-width:760px;pointer-events:none}
.window-copy h1{font-size:clamp(32px,4.7vw,64px);color:#fff;font-weight:400;font-variation-settings:"opsz" 144;text-wrap:balance}
.window .stand{color:var(--on-deep-mut);font-size:clamp(16.5px,1.5vw,19px);margin-top:18px;max-width:56ch}
.window .byline{font:500 12px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);margin-top:22px}

.onlist{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(22px,2.6vw,32px);display:flex;flex-direction:column}
.onlist ol{list-style:none;margin:0;padding:0;flex:1}
.onlist li+li{border-top:1px solid var(--line)}
.onlist li a{display:grid;grid-template-columns:36px 1fr;gap:14px;align-items:center;padding:16px 0;text-decoration:none;
  font:500 18px/1.3 var(--serif);color:var(--ink);transition:color .2s}
.onlist li a:hover{color:var(--accent-d)}
.ring{position:relative;width:32px;height:32px;border-radius:50%;border:1px dashed #B9B9DC;transition:border-color .3s,transform .8s var(--ease)}
.ring i{position:absolute;left:50%;top:-4px;width:7px;height:7px;margin-left:-3.5px;border-radius:50%;background:var(--accent)}
.onlist li:nth-child(2) .ring{transform:rotate(72deg)}.onlist li:nth-child(3) .ring{transform:rotate(144deg)}
.onlist li:nth-child(4) .ring{transform:rotate(216deg)}.onlist li:nth-child(5) .ring{transform:rotate(288deg)}
.onlist li a:hover .ring{transform:rotate(400deg);border-color:var(--accent)}
.onlist-more{margin-top:18px;display:flex;justify-content:space-between;align-items:center;border-radius:14px;padding:14px 16px;
  background:var(--tint);text-decoration:none;font-weight:700;color:var(--accent-d)}
.onlist-more:hover{background:var(--tint2)}
.arrow{width:22px;height:2px;background:currentColor;position:relative}
.arrow::after{content:"";position:absolute;right:0;top:-4px;width:8px;height:8px;border-top:2px solid currentColor;border-right:2px solid currentColor;transform:rotate(45deg)}
@media(max-width:960px){.obs-grid{grid-template-columns:1fr}.window{min-height:560px}}
@media(max-width:520px){.window-hint{display:none}.window{min-height:540px}}

/* ---------------------------------------------------------------- scale of the universe */
.zoom{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--r);background:var(--deep);color:var(--on-deep);
  min-height:620px;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto minmax(240px,1fr) auto}
.zoom-bg{position:absolute;inset:0;z-index:-2;opacity:.3;transition:filter .3s}
.zoom-bg .vid img,.zoom-bg .vid video{filter:grayscale(.6) hue-rotate(10deg)}
.zoom::after{content:"";position:absolute;inset:0;z-index:-1;background:radial-gradient(70% 70% at 50% 45%,rgba(11,10,46,.15),rgba(11,10,46,.85))}
.zoom-cv{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.zoom-read{position:relative;z-index:1;padding:28px 30px 0}
.zoom .mono-label{color:var(--on-deep-mut)}
.zoom-fov{font:400 clamp(30px,4.4vw,56px)/1.05 var(--serif);color:#fff;margin-top:8px;font-variation-settings:"opsz" 144}
.zoom-fov sup{font-size:.5em;vertical-align:.9em;margin-left:2px}
.zoom-friendly{font:500 13px/1.4 var(--mono);color:var(--gold);margin-top:8px;letter-spacing:.04em}
.zoom-lm{position:absolute;z-index:1;right:28px;top:28px;width:min(320px,40%);background:rgba(11,10,46,.62);border:1px solid rgba(139,147,232,.35);
  border-radius:var(--r-s);padding:16px 18px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.zoom-lm{grid-row:2;align-self:start}
.zoom-lm-name{font:500 22px/1.15 var(--serif);color:#fff;margin-top:6px}
.zoom-lm-note{font-size:14.5px;color:var(--on-deep-mut);margin-top:6px}
.zoom-ctl{position:relative;z-index:1;padding:0 30px 26px;align-self:end;grid-row:4;min-width:0}
.zoom-stops{min-width:0}
.zoom-scale{display:flex;justify-content:space-between;font:400 11px/1 var(--mono);color:var(--on-deep-mut);margin-top:10px;letter-spacing:.06em}
.zoom-stops{display:flex;gap:8px;overflow-x:auto;scrollbar-width:thin;padding:16px 0 4px;margin-top:6px}
.zoom-stops button{flex:none;font:500 12px/1 var(--mono);letter-spacing:.06em;border-radius:999px;padding:9px 13px;cursor:pointer;
  color:var(--on-deep);background:rgba(255,255,255,.06);border:1px solid rgba(139,147,232,.35);transition:background .2s,color .2s,border-color .2s}
.zoom-stops button:hover{border-color:var(--gold);color:var(--gold)}
.zoom-stops button[aria-current="true"]{background:var(--gold);border-color:var(--gold);color:var(--deep)}
@media(max-width:700px){
  .zoom{min-height:640px}
  .zoom-lm{position:relative;right:auto;top:auto;width:auto;margin:14px 18px 0}
  .zoom-read{padding:22px 18px 0}.zoom-ctl{padding:0 18px 20px}
  .zoom-scale span:nth-child(2),.zoom-scale span:nth-child(3){display:none}
}

/* range dials */
.dial{-webkit-appearance:none;appearance:none;width:100%;height:34px;background:transparent;cursor:pointer;margin:0}
.dial::-webkit-slider-runnable-track{height:6px;border-radius:6px;background:linear-gradient(90deg,var(--accent2),var(--gold));}
.dial::-moz-range-track{height:6px;border-radius:6px;background:linear-gradient(90deg,var(--accent2),var(--gold))}
.dial::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;margin-top:-12px;border-radius:50%;background:var(--deep);
  border:3px solid var(--gold);box-shadow:0 0 0 6px rgba(242,196,109,.18)}
.dial::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--deep);border:3px solid var(--gold);box-shadow:0 0 0 6px rgba(242,196,109,.18)}
.dial-light::-webkit-slider-runnable-track{background:linear-gradient(90deg,var(--tint2),var(--accent))}
.dial-light::-moz-range-track{background:linear-gradient(90deg,var(--tint2),var(--accent))}
.dial-light::-webkit-slider-thumb{background:#fff;border-color:var(--accent);box-shadow:0 0 0 6px rgba(67,56,202,.14)}
.dial-light::-moz-range-thumb{background:#fff;border-color:var(--accent);box-shadow:0 0 0 6px rgba(67,56,202,.14)}

/* ---------------------------------------------------------------- stories: a loose constellation of cards */
.constellation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(22px,3vw,40px)}
.card{position:relative;display:flex;flex-direction:column}
.constellation .card:nth-child(3n+2){margin-top:64px}
.constellation .card:nth-child(3n){margin-top:22px}
.node{position:absolute;left:-7px;top:-7px;width:14px;height:14px;border-radius:50%;background:var(--paper);border:2px solid var(--accent);z-index:2}
.card-body{padding:18px 4px 0}
.kick{font:500 11.5px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.card h3{font-size:clamp(21px,1.9vw,25px);margin:10px 0 10px;font-variation-settings:"opsz" 72;transition:color .25s}
.card p{color:var(--mut);font-size:16px}
.card:hover h3{color:var(--accent-d)}
/* the redshift split: a duotone that separates into a red and a blue copy on hover */
.rs{position:relative;margin:0;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r-s);background:linear-gradient(150deg,var(--accent),var(--deep) 75%);isolation:isolate}
.rs img{width:100%;height:100%;object-fit:cover;mix-blend-mode:luminosity;opacity:.92;transform:scale(1.04);transition:transform 1.2s var(--ease),opacity .5s}
.rs::before,.rs::after{content:"";position:absolute;inset:0;background:var(--src) center/cover no-repeat;mix-blend-mode:screen;opacity:0;
  transition:opacity .45s,transform .7s var(--ease);pointer-events:none}
.rs::before{filter:grayscale(1) sepia(1) saturate(6) hue-rotate(-40deg) brightness(.75)}
.rs::after{filter:grayscale(1) sepia(1) saturate(6) hue-rotate(185deg) brightness(.75)}
.card:hover .rs img{transform:scale(1.1)}
.card:hover .rs::before{opacity:.75;transform:translateX(-7px) scale(1.06)}
.card:hover .rs::after{opacity:.75;transform:translateX(7px) scale(1.06)}
@media(max-width:1000px){.constellation{grid-template-columns:repeat(2,minmax(0,1fr))}.constellation .card:nth-child(n){margin-top:0}.constellation .card:nth-child(2n){margin-top:48px}}
@media(max-width:620px){.constellation{grid-template-columns:1fr}.constellation .card:nth-child(n){margin-top:0}}

/* ---------------------------------------------------------------- weight on other worlds */
.weigh-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.5fr);gap:clamp(20px,3vw,40px);align-items:start}
.moonframe{position:relative;margin:0;aspect-ratio:1/1;border-radius:50%;overflow:hidden;background:var(--deep);
  box-shadow:0 30px 70px -30px rgba(11,10,46,.6),inset 0 0 0 1px rgba(255,255,255,.06)}
.moonframe img{position:absolute;left:0;top:-15%;width:100%;height:130%;object-fit:cover;transform:translateY(calc((var(--p,.5) - .5) * -18%)) scale(1.05)}
.phase{position:absolute;inset:0;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at calc(20% + var(--p,.5) * 120%) 50%,transparent 46%,rgba(11,10,46,.82) 62%)}
.weigh-form{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-s);padding:20px}
.weigh-form label{font-weight:700}
.kg-in{display:flex;align-items:baseline;gap:10px;margin:8px 0 10px}
.kg-in input{width:100%;min-width:0;font:400 44px/1.1 var(--serif);color:var(--ink);border:0;border-bottom:2px solid var(--line);background:transparent;padding:4px 0}
.kg-in input:focus-visible{outline:none;border-bottom-color:var(--accent)}
.kg-in span{font:500 16px/1 var(--mono);color:var(--mut)}
.hint{font-size:14px;color:var(--mut);margin-top:10px}
.planets{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
.planet{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;cursor:pointer;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-s);padding:14px 14px 16px;color:var(--ink);font:inherit;
  transition:border-color .2s,transform .25s var(--ease),box-shadow .25s}
.planet:hover{border-color:var(--accent2);transform:translateY(-3px)}
.planet[aria-pressed="true"]{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent) inset,0 18px 40px -24px rgba(67,56,202,.6)}
.orb{width:34px;height:34px;border-radius:50%;margin-bottom:6px;box-shadow:inset -6px -5px 10px rgba(0,0,0,.35)}
.p-mercury .orb{background:radial-gradient(circle at 35% 30%,#D9D4CC,#8E877E)}
.p-venus .orb{background:radial-gradient(circle at 35% 30%,#F6E3B4,#C99A4B)}
.p-earth .orb{background:radial-gradient(circle at 35% 30%,#9CC8FF,#2F5FB8 60%,#1E3C7A)}
.p-moon .orb{background:radial-gradient(circle at 35% 30%,#EEEEF4,#9A9AAE)}
.p-mars .orb{background:radial-gradient(circle at 35% 30%,#F2A27A,#B4482A)}
.p-jupiter .orb{background:repeating-linear-gradient(170deg,#E9CFA4 0 4px,#C99A6A 4px 7px,#F2E2C4 7px 10px);}
.p-saturn .orb{background:radial-gradient(circle at 35% 30%,#F7E7BE,#C9A867)}
.p-uranus .orb{background:radial-gradient(circle at 35% 30%,#CFF4F4,#6CBCC8)}
.p-neptune .orb{background:radial-gradient(circle at 35% 30%,#9DB4FF,#3346B8)}
.p-pluto .orb{background:radial-gradient(circle at 35% 30%,#F1DCCB,#A08571)}
.pn{font:500 16px/1.2 var(--serif)}
.pv{font:400 22px/1.1 var(--serif);color:var(--accent-d);font-variant-numeric:tabular-nums}
.pg{font:400 11px/1 var(--mono);color:var(--mut)}
.bar{display:block;width:100%;height:4px;border-radius:4px;background:var(--tint);margin-top:8px;overflow:hidden}
.bar i{display:block;height:100%;width:calc(var(--w,0) * 100%);background:var(--accent);border-radius:4px;transition:width .6s var(--ease)}
.drop{margin-top:16px;display:grid;grid-template-columns:200px 1fr;gap:26px;background:var(--deep);color:var(--on-deep);border-radius:var(--r);padding:24px;
  position:relative;overflow:hidden}
.drop::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 80% at 0% 0%,rgba(67,56,202,.45),transparent 70%);pointer-events:none}
.drop-lanes{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;height:230px;padding-top:22px}
.lane{position:relative;border-left:1px dashed rgba(189,191,236,.35);border-right:1px dashed rgba(189,191,236,.35)}
.lane span{position:absolute;bottom:-2px;left:0;right:0;text-align:center;font:500 10.5px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--on-deep-mut);transform:translateY(100%);padding-top:6px}
.ball{position:absolute;left:50%;top:0;width:18px;height:18px;margin-left:-9px;border-radius:50%}
.b-earth{background:radial-gradient(circle at 35% 30%,#9CC8FF,#2F5FB8)}
.b-world{background:radial-gradient(circle at 35% 30%,#FFE6B0,var(--gold))}
.ball.go{animation:fall var(--t,1s) cubic-bezier(.11,0,.5,0) forwards}
@keyframes fall{from{transform:translateY(0)}to{transform:translateY(190px)}}
.drop-top{position:absolute;top:0;left:0;font:500 10.5px/1 var(--mono);color:var(--on-deep-mut)}
.drop-ground{position:absolute;left:-6px;right:-6px;top:230px;height:2px;background:var(--accent2);border-radius:2px}
.drop-lanes{margin-bottom:22px}
.drop-copy{position:relative}
.drop .mono-label{color:var(--on-deep-mut)}
.drop h3{font-size:30px;color:#fff;margin:6px 0 12px}
.drop-copy p+p{margin-top:6px}
.drop-copy p{color:var(--on-deep)}
.drop .note{color:var(--gold);font-size:15px}
.drop .note:empty{display:none}
.drop .btn{margin-top:16px}
@media(max-width:1100px){.planets{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:900px){.weigh-grid{grid-template-columns:1fr}.moonframe{max-width:340px;margin:0 auto}}
@media(max-width:620px){.planets{grid-template-columns:repeat(2,minmax(0,1fr))}.drop{grid-template-columns:1fr}.drop-lanes{max-width:220px}}

/* ---------------------------------------------------------------- southern sky: aperture reveal */
.aperture{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--r);background:var(--deep);min-height:clamp(540px,80vh,760px);
  display:flex;align-items:flex-end;color:var(--on-deep);--p:1}
.aperture img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;
  clip-path:circle(calc(14% + var(--p) * 62%) at 50% 42%);transform:scale(calc(1.18 - var(--p) * .14));filter:saturate(1.1)}
.aperture-ring{position:absolute;left:50%;top:42%;width:calc(28vmax + var(--p) * 124vmax);aspect-ratio:1;transform:translate(-50%,-50%);
  border-radius:50%;border:1px solid rgba(242,196,109,.55);box-shadow:0 0 0 14px rgba(242,196,109,.06);z-index:-1;pointer-events:none}
.aperture::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,transparent 40%,rgba(11,10,46,.9))}
.aperture-copy{padding:clamp(24px,4vw,52px);max-width:720px}
.aperture-copy h2{color:#fff;font-size:clamp(30px,4.4vw,54px)}
.aperture-copy p{color:var(--on-deep);font-size:18px;margin-top:16px;max-width:58ch}
.aperture .ap-read{color:var(--gold);margin-top:20px}

/* ---------------------------------------------------------------- the long exposure */
.le-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:clamp(24px,4vw,64px);align-items:center}
.le-photo{position:relative;margin:0;aspect-ratio:16/11;overflow:hidden;border-radius:var(--r);background:var(--deep);--p:1}
.le-photo img{width:100%;height:100%;object-fit:cover;filter:brightness(calc(.55 + var(--p) * .6)) contrast(calc(1.3 - var(--p) * .25)) saturate(calc(.4 + var(--p) * .7))}
.grain{position:absolute;inset:-50%;pointer-events:none;opacity:.22;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.2s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-4%,3%)}50%{transform:translate(3%,-5%)}75%{transform:translate(-2%,-2%)}100%{transform:translate(4%,4%)}}
.le-count{position:absolute;left:18px;bottom:16px;color:var(--gold);background:rgba(11,10,46,.7);padding:8px 12px;border-radius:999px;font-variant-numeric:tabular-nums}
.le-copy h2{font-size:clamp(30px,4.2vw,52px)}
.le-copy p{font-size:18px;color:var(--ink2);margin:16px 0 26px;max-width:46ch}
@media(max-width:860px){.le-grid{grid-template-columns:1fr}}

/* ---------------------------------------------------------------- method */
.scan{position:relative;margin:0 0 34px;aspect-ratio:21/8;overflow:hidden;border-radius:var(--r);background:var(--deep)}
.scan .vid img,.scan .vid video{filter:saturate(.6) contrast(1.1);opacity:.85}
.scanlines{position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(11,10,46,.45) 0 2px,transparent 2px 4px),linear-gradient(90deg,rgba(67,56,202,.35),transparent 60%);
  animation:scan 7s linear infinite}
.scanlines::after{content:"";position:absolute;left:0;right:0;height:18%;top:-20%;background:linear-gradient(180deg,transparent,rgba(139,147,232,.18),transparent);animation:sweep 5.5s linear infinite}
@keyframes scan{to{background-position:0 40px,0 0}}
@keyframes sweep{to{top:110%}}
.scan-t{position:absolute;left:18px;top:16px;color:var(--gold);font-variant-numeric:tabular-nums}
.scan figcaption{position:absolute;right:16px;bottom:12px;font:400 11.5px/1 var(--mono);color:var(--on-deep-mut)}
.method-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.mcol{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.mcol h3{font-size:26px;margin:12px 0 12px}
.mcol p{color:var(--ink2);font-size:16px}
@media(max-width:960px){.method-cols{grid-template-columns:1fr}.scan{aspect-ratio:16/9}}

/* ---------------------------------------------------------------- questions */
.faq-grid{display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:clamp(20px,4vw,64px)}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:22px 0;
  font:500 21px/1.3 var(--serif)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent-d)}
.faq summary i{flex:none;position:relative;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);transition:transform .4s var(--ease),background .3s}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.6px;margin:-.8px -6px;background:var(--accent)}
.faq summary i::after{transform:rotate(90deg);transition:transform .3s}
.faq details[open] summary i{transform:rotate(180deg);background:var(--tint)}
.faq details[open] summary i::after{transform:rotate(0)}
.faq p{color:var(--ink2);padding:0 50px 24px 0;max-width:70ch}
@media(max-width:860px){.faq-grid{grid-template-columns:1fr}.faq p{padding-right:0}}

/* ---------------------------------------------------------------- footer */
.foot{padding:clamp(70px,9vw,120px) 0 28px}
.foot-card{background:var(--tint);border:1px solid var(--line);border-radius:var(--r);padding:clamp(24px,4vw,48px)}
.foot-cols{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:28px}
.foot-logo .logo{width:104px}
.foot-tag{font:italic 400 19px/1.3 var(--serif);margin:14px 0 12px}
.entity{font-size:14.5px;color:var(--ink2)}
.foot h2{font:500 11.5px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--mut);margin:6px 0 14px}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin-bottom:8px}
.foot li a{text-decoration:none;color:var(--ink)}
.foot li a:hover{color:var(--accent-d);text-decoration:underline}
.legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;border-top:1px solid var(--line);margin-top:32px;padding-top:20px;font-size:13.5px;color:var(--mut)}
@media(max-width:860px){.foot-cols{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}
@media(max-width:460px){.foot-cols{grid-template-columns:1fr}}

/* ---------------------------------------------------------------- inner pages */
.phead{padding-top:clamp(36px,6vw,80px)}
.phead-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.8fr);gap:clamp(24px,5vw,72px);align-items:center}
.phead h1{font-size:clamp(40px,6.4vw,84px);font-weight:400;font-variation-settings:"opsz" 144;text-wrap:balance}
.lede{font:italic 400 clamp(19px,2vw,24px)/1.4 var(--serif);color:var(--ink2);margin-top:20px;max-width:40ch}
.eyepiece{position:relative;margin:0 auto;width:min(100%,360px);aspect-ratio:1;border-radius:50%;overflow:hidden;background:var(--deep);
  box-shadow:0 0 0 10px #fff,0 0 0 11px var(--line),0 40px 80px -30px rgba(11,10,46,.6)}
.eyepiece img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;animation:drift 26s ease-in-out infinite alternate}
.eyepiece::after{content:"";position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle,transparent 48%,rgba(11,10,46,.75) 72%);pointer-events:none}
@keyframes drift{from{transform:scale(1.35) translate(-6%,-3%)}to{transform:scale(1.15) translate(5%,4%)}}
.reticle{position:absolute;inset:0;z-index:1;width:100%;height:100%;pointer-events:none;animation:spin 120s linear infinite}
.reticle circle,.reticle line{fill:none;stroke:rgba(242,196,109,.7);stroke-width:.8}
.reticle .thin{stroke:rgba(242,196,109,.4);stroke-dasharray:2 4}
@keyframes spin{to{transform:rotate(360deg)}}
.docgrid{display:grid;grid-template-columns:220px minmax(0,1fr);gap:clamp(24px,5vw,80px);padding-top:clamp(40px,6vw,80px)}
.toc{position:sticky;top:84px;align-self:start}
.toc ol{list-style:none;margin:12px 0 0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:7px 0 7px 16px;margin-left:-1px;border-left:2px solid transparent;text-decoration:none;color:var(--ink2);font-size:15px}
.toc a:hover,.toc a.on{color:var(--accent-d);border-left-color:var(--accent)}
.doc{max-width:70ch;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(24px,4vw,52px)}
.doc h2{display:flex;align-items:baseline;gap:14px;font-size:clamp(24px,2.6vw,32px);margin:42px 0 14px}
.doc h2:first-child{margin-top:0}
.h2n{font:500 13px/1 var(--mono);color:var(--accent);letter-spacing:.1em}
.doc p{margin:0 0 16px;color:var(--ink2)}
.doc ul{list-style:none;margin:0 0 18px;padding:0}
.doc li{position:relative;padding-left:28px;margin-bottom:10px;color:var(--ink2)}
.doc li::before{content:"\2726";position:absolute;left:2px;top:0;color:var(--accent)}
.doc a{color:var(--accent-d);text-underline-offset:3px}
@media(max-width:900px){.phead-grid{grid-template-columns:1fr}.eyepiece{width:min(78%,300px)}.docgrid{grid-template-columns:1fr}.toc{position:static}}

/* ---------------------------------------------------------------- stillness: reduced motion or the pause button */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  html{scroll-behavior:auto}
}
html.still .window-vid img,html.still .eyepiece img,html.still .reticle,html.still .grain,html.still .scanlines,html.still .scanlines::after,html.still .hint-dot{animation:none!important}