/* Dark Luxury UI — Midnight Proof */
:root{--bg-canvas:#160f2e;--bg-surface:#241a42;--text-primary:#fff;--text-muted:#d0c5e3;--accent-primary:#e0409b;--accent-secondary:#22d3ee;--border-subtle:#75638e;--radius:20px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg-canvas);color:var(--text-primary);font:1rem/1.8 system-ui,"Segoe UI",Roboto,sans-serif}
h1,h2,h3,p,li{overflow-wrap:anywhere;hyphens:auto}
h1,h2,h3{font-weight:800;letter-spacing:-.035em;line-height:1.15}
h1{font-size:clamp(2.4rem,6vw,4.8rem);margin:.35em 0}
h2{font-size:clamp(1.65rem,3vw,2.5rem);margin:0 0 1rem}
h3{font-size:1.3rem}
p{margin:0 0 1.3rem}
a{color:var(--accent-secondary);text-underline-offset:.25em}
a:hover{color:#fff}
button,input,textarea,select{font:inherit}
button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:.65rem 1rem;background:transparent;border:1px solid var(--accent-secondary);color:#fff;text-decoration:none;font-size:.75rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;border-radius:0}
button:hover,.button:hover{background:#173846}
:focus-visible{outline:3px solid var(--accent-secondary);outline-offset:5px}
.skip{position:absolute;left:1rem;top:-6rem;z-index:10;background:var(--bg-surface);padding:1rem}
.skip:focus{top:1rem}
.site-header{position:relative;margin:12px clamp(8px,2vw,32px);padding:10px 18px;border:1px solid var(--border-subtle);border-radius:999px;background:var(--bg-surface);display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:9px;color:#fff;text-decoration:none;font-size:.95rem;font-weight:800;letter-spacing:-.025em;min-width:0}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;flex-shrink:0;border:1px solid var(--accent-primary);border-radius:50%;color:var(--accent-secondary)}
.site-nav{display:flex;align-items:center;gap:13px;min-width:0}
.site-nav a{font-size:.75rem;white-space:nowrap;text-decoration:none;color:var(--text-muted);min-height:44px;display:inline-flex;align-items:center}
.site-nav a[aria-current="page"]{color:var(--accent-secondary);text-decoration:underline}
.site-nav .button{padding:.55rem .7rem;font-size:.65rem;color:#fff}
.menu-toggle{display:none;font-size:1.5rem;letter-spacing:.08em;padding:0;width:44px;border:0}
main{padding-bottom:4rem}
.wrap{max-width:1200px;margin:0 auto;padding:clamp(1rem,3vw,3rem)}
.reading{max-width:72ch;margin:0 auto}
.page-intro{padding-top:clamp(2rem,6vw,5rem)}
.eyebrow{font-size:.76rem;text-transform:uppercase;letter-spacing:.17em;font-weight:800;color:var(--accent-secondary);margin-bottom:1rem}
.lead{font-size:clamp(1.1rem,2vw,1.3rem);color:var(--text-muted);max-width:60ch}
.hero{position:relative;max-width:1200px;margin:1rem auto 3rem}
.image-frame{aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;background:var(--bg-surface)}
.image-frame img{display:block;width:100%;height:100%;object-fit:cover}
.hero .image-frame{aspect-ratio:16/9}
.hero-facts{position:absolute;right:28px;bottom:28px;width:min(360px,80%);padding:1.5rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius)}
.hero-facts p{margin:0 0 .75rem;font-weight:800}
.hero-facts ul{list-style:none;margin:0;padding:0}
.hero-facts li{padding:.5rem 0;border-top:1px solid var(--border-subtle);color:var(--text-muted)}
section.reading{padding:2.5rem 0}
.glow{background:radial-gradient(ellipse at 0 50%,#e0409b18,transparent 65%),radial-gradient(ellipse at 100% 20%,#22d3ee10,transparent 60%)}
.puzzle-row{display:flex;align-items:flex-start;gap:1.2rem;padding:1.8rem 0;border-top:1px solid var(--border-subtle)}
.puzzle-row>div{min-width:0;flex:1}
.puzzle-icon{display:grid;place-items:center;flex-shrink:0;width:44px;height:44px;border:1px solid var(--accent-primary);border-radius:50%;font-size:1.3rem;color:var(--accent-secondary)}
.puzzle-row h3{margin:.1rem 0 .7rem}
.puzzle-row p:last-child{margin-bottom:0}
blockquote{margin:2rem 0;padding:.5rem 0 .5rem 1.5rem;border-left:3px solid var(--accent-primary);font-size:1.35rem;font-weight:700;line-height:1.5}
details{border-top:1px solid var(--border-subtle);padding:.5rem 0}
details:last-child{border-bottom:1px solid var(--border-subtle)}
summary{cursor:pointer;min-height:44px;padding:.55rem .2rem;font-weight:700;color:var(--accent-secondary)}
details p,details ol,details ul{margin:1rem 0}
.worked{padding-left:1.5rem}
.worked li{padding:.4rem 0 .4rem .5rem}
.math{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--accent-secondary);letter-spacing:.03em}
figure{margin:2rem 0}
figcaption{font-size:.87rem;color:var(--text-muted);padding:.7rem 0}
.breakout{max-width:1040px;margin:2rem auto;padding:0 clamp(1rem,3vw,3rem)}
.diagram{display:block;width:100%;height:auto;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius)}
.table-scroll{overflow-x:auto;max-width:100%;margin:1.5rem 0}
table{border-collapse:collapse;width:100%;min-width:340px}
th,td{padding:.7rem;border:1px solid var(--border-subtle);text-align:left}
th{background:var(--bg-surface)}
ul,ol{padding-left:1.5rem}
.reference-list li{margin:.7rem 0}
.muted{color:var(--text-muted)}
.site-footer{border-top:1px solid var(--border-subtle);padding:2rem clamp(1rem,3vw,3rem);color:var(--text-muted)}
.footer-inner{max-width:1200px;margin:auto;display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap}
.footer-inner>div{min-width:0}
.footer-links{display:flex;gap:1.2rem;flex-wrap:wrap}
.footer-links a{display:inline-flex;align-items:center;min-height:44px}
.site-footer p{margin:0;font-size:.9rem}
form{margin:2rem 0}
label{display:block;font-weight:700;margin:1rem 0 .35rem}
input,textarea,select{width:100%;min-width:0;padding:.8rem;background:var(--bg-surface);color:#fff;border:1px solid var(--border-subtle);border-radius:0;min-height:44px}
textarea{resize:vertical}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:0 1.5rem}
.actions{display:flex;gap:1rem;flex-wrap:wrap;margin:1.25rem 0}
.status{color:var(--accent-secondary);min-height:1.8em}
.output{margin-top:2rem;border-top:1px solid var(--border-subtle);padding-top:1.5rem}
small{color:var(--text-muted)}
@media(max-width:480px){.site-header{padding:8px 12px;gap:6px}.brand{font-size:.8rem;gap:6px}.brand-mark{width:26px;height:26px}.hero-facts{position:static;width:auto;margin:1rem 0 0}.hero{margin-bottom:1rem}.hero .image-frame{aspect-ratio:4/3}.form-grid{grid-template-columns:minmax(0,1fr)}.puzzle-row{gap:.8rem}.puzzle-icon{width:36px;height:36px}.reading{width:100%}.site-footer{padding:1.5rem 1rem}}
@media(min-width:481px) and (max-width:768px){.hero-facts{position:static;width:auto;margin:1rem 0 0}.hero{margin-bottom:1rem}.wrap{padding:1.5rem}}
@media(max-width:1024px){.menu-toggle{display:inline-flex}.site-nav{display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:5;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:20px;padding:1rem;flex-direction:column;align-items:stretch;gap:0}.site-nav.is-open{display:flex}.site-nav a{padding:.45rem .8rem;font-size:.95rem}.site-nav .button{margin-top:.6rem;justify-content:center}.site-header{border-radius:30px}}
@media(min-width:769px) and (max-width:1024px){.wrap{padding:2rem}.hero-facts{width:320px}}
@media(min-width:1025px){.site-header{max-width:1500px;margin:12px auto;width:calc(100% - 48px)}}
@media(prefers-reduced-motion:no-preference){a,button{transition:color .15s,background .15s}}
@media print{.site-header,.site-footer,.actions{display:none}body{background:white;color:black}a,.math,summary{color:black}.reading{max-width:none}.image-frame{max-height:250px}}