:root{--obsidian:#080c12;--silver:#e2e7ea;--muted:#a3adb9;--mineral:#121a24;--line:#263241;--rose:#e5aebf;--burgundy:#652e43;--ease:cubic-bezier(.2,.8,.2,1);color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--obsidian);color:var(--silver);font:16px/1.6 var(--fai-body);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;touch-action:manipulation}
:focus-visible{outline:2px solid var(--fai-focus);outline-offset:3px}
::selection{background:var(--burgundy);color:#fff}
h1,p,figure{margin:0}
em{font-style:normal;color:var(--rose)}

.hero{max-width:1440px;margin:auto;min-height:calc(100svh - var(--fai-bar-h));padding:clamp(20px,3vw,40px) clamp(16px,4vw,64px) 32px;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.25fr);grid-template-rows:auto auto;column-gap:clamp(24px,4vw,72px);align-content:center;background:url('assets/stars.svg') right top/cover no-repeat}
.hero-copy{grid-row:1/3;align-self:center;max-width:520px}
.eyebrow{display:flex;align-items:center;gap:10px;font:500 11px/1.4 var(--fai-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:22px}
.signal{width:6px;height:6px;border-radius:50%;background:var(--rose);box-shadow:0 0 0 4px rgb(229 174 191/.15)}
h1{font:500 clamp(56px,7vw,112px)/.98 var(--fai-display);letter-spacing:-.02em}
.lead{color:var(--muted);font-size:17px;margin:24px 0 0;max-width:30ch}
.proof{margin:26px 0 30px;padding-left:14px;border-left:1px solid var(--line);font-size:14px;color:var(--silver);max-width:40ch}
.proof span{display:block;font:500 10px/1.8 var(--fai-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--rose)}
.primary{display:inline-flex;align-items:center;gap:28px;min-height:52px;padding:12px 22px;background:var(--silver);color:var(--obsidian);font-weight:600;font-size:14px;border-radius:999px;transition:background .3s var(--ease),transform .3s var(--ease)}
.primary:hover{background:var(--rose)}
.primary:active{transform:scale(.98)}

.observatory{grid-column:2;min-width:0}
.moon-stage{position:relative;height:clamp(260px,calc(100svh - 430px),600px);touch-action:pan-y;cursor:grab;isolation:isolate;user-select:none;-webkit-user-select:none}
.moon-stage:active{cursor:grabbing}
.poster,#moon{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
#moon{opacity:0;transition:opacity .9s var(--ease)}
.ready #moon{opacity:1}
.poster{transition:opacity .9s var(--ease)}
.ready .poster{opacity:0}
.scene-status{position:absolute;top:6px;right:0;font:500 10px/1 var(--fai-mono);letter-spacing:.14em;color:var(--muted);padding:6px 9px;border:1px solid var(--line);border-radius:999px;background:rgb(8 12 18/.6)}
.ready .scene-status{color:var(--rose)}
figcaption{font:400 11px/1.4 var(--fai-mono);color:var(--muted);text-align:center;letter-spacing:.04em;margin-top:6px}

.lab{grid-column:2;margin-top:14px;padding:16px 20px 10px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(160deg,rgb(22 30 41/.75),rgb(10 14 20/.75));backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:grid;grid-template-columns:1fr 1fr;gap:12px 28px;align-items:center}
.lab[hidden]{display:none}
.lab-top{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.lab-head{display:flex;align-items:baseline;gap:10px}
.lab-k{font:500 10px/1 var(--fai-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
#phase-name{font:500 26px/1 var(--fai-display);letter-spacing:.02em;min-width:5.5ch}
.presets{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}
.presets button,.control-actions button{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--silver);font-size:13px;transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease)}
.presets button:hover,.control-actions button:hover{background:var(--mineral);border-color:#3a4859}
.presets button[aria-pressed=true]{border-color:var(--rose);color:#fff;background:rgb(229 174 191/.1)}
.glyph{width:12px;height:12px;border-radius:50%;box-shadow:inset 0 0 0 1px rgb(226 231 234/.35)}
.g15{background:linear-gradient(90deg,#e2e7ea 0 20%,#1d2632 20%)}
.g50{background:linear-gradient(90deg,#e2e7ea 0 50%,#1d2632 50%)}
.g80{background:linear-gradient(90deg,#e2e7ea 0 80%,#1d2632 80%)}
.g100{background:#e2e7ea}
.slider{display:grid;grid-template-columns:1fr auto;align-items:center;column-gap:12px;min-width:0}
.slider label{font-size:13px;color:var(--muted)}
.slider output{font:500 13px/1 var(--fai-mono);font-variant-numeric:tabular-nums;color:var(--silver)}
input[type=range]{grid-column:1/-1;-webkit-appearance:none;appearance:none;width:100%;min-width:0;height:36px;margin:0;background:transparent;cursor:pointer;--fill:50%}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:linear-gradient(90deg,var(--rose) var(--fill),#2a3442 var(--fill))}
input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:#2a3442}
input[type=range]::-moz-range-progress{height:4px;border-radius:4px;background:var(--rose)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;margin-top:-8px;border-radius:50%;background:#f4f6f8;border:0;box-shadow:0 0 0 5px rgb(229 174 191/.16),0 2px 8px rgb(0 0 0/.55);transition:transform .2s var(--ease)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#f4f6f8;border:0;box-shadow:0 0 0 5px rgb(229 174 191/.16),0 2px 8px rgb(0 0 0/.55)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.15)}
input[type=range]:focus-visible{outline:2px solid var(--fai-focus);outline-offset:2px;border-radius:6px}
.control-actions{display:flex;gap:8px}
.control-actions button[aria-pressed=true]{border-color:var(--rose)}
button:disabled{cursor:default;color:var(--muted)}
.hint{font-size:12px;color:var(--muted);justify-self:end;text-align:right}
.tech{grid-column:1/-1;border-top:1px solid var(--line);padding-top:4px}
.tech summary{cursor:pointer;list-style:none;min-height:40px;display:flex;align-items:center;justify-content:space-between;font:500 11px/1 var(--fai-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.tech summary::-webkit-details-marker{display:none}
.tech summary::after{content:'+';font-size:18px;color:var(--rose)}
.tech[open] summary::after{content:'−'}
.tech ul{margin:4px 0 6px;padding-left:18px;font-size:13px;color:var(--muted);display:grid;gap:4px}
.fallback-note{grid-column:2;font-size:12px;color:var(--muted);padding-top:12px}

footer{max-width:1440px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px clamp(16px,4vw,64px);border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
footer a{min-height:44px;display:inline-flex;align-items:center;color:var(--silver);white-space:nowrap}
footer a:hover{color:var(--rose)}

@media(max-width:900px){
 .hero{grid-template-columns:1fr;min-height:0;padding-top:24px}
 .hero-copy,.observatory,.lab,.fallback-note{grid-column:1;grid-row:auto}
 .hero-copy{max-width:none}
 h1{font-size:clamp(46px,13vw,80px)}
 h1 br:first-child{display:none}
 .lead{font-size:15px;margin-top:14px}
 .proof{margin:18px 0 20px;font-size:13px}
 .observatory{margin-top:20px}
 .moon-stage{height:clamp(240px,74vw,440px)}
}
@media(max-width:560px){
 .lab{grid-template-columns:1fr;padding:16px}
 .lab>*{grid-column:1/-1}
 .presets{justify-content:flex-start;width:100%}
 .presets button{flex:1 1 calc(50% - 6px);justify-content:center}
 .control-actions button{flex:1;justify-content:center}
 .control-actions{width:100%}
 .hint{justify-self:start;text-align:left}
 footer{flex-direction:column;align-items:flex-start;gap:4px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important}}