/* explainer pages: same tokens and glass as the home page, no scroll film */
:root{
  --canvas:#EEEDF4; --panel:#F8F6FB; --ink:#16131F; --text-secondary:#4E4860;
  --champagne:#E6CC97; --champagne-deep:#B8924E; --lilac:#BD90FD; --mint:#9EE8E0;
  --accent:#E8FC56; --accent-hover:#D9F03A;
  --line:rgba(22,19,31,.14); --line-strong:#6E6788;
  --e1:cubic-bezier(.22,.8,.24,1); --e2:cubic-bezier(.65,0,.35,1);
  --display:"Bricolage Grotesque",system-ui,sans-serif; --body:"Instrument Sans",system-ui,sans-serif; --mono:"Geist Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html{overflow-x:hidden;overflow-x:clip;scroll-behavior:smooth}
body{margin:0;overflow-x:hidden;overflow-x:clip;background:var(--canvas);color:var(--ink);font:400 1.0625rem/1.65 var(--body);-webkit-font-smoothing:antialiased}
img,video,svg{max-width:100%;display:block}
img{height:auto}
a{color:inherit}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;box-shadow:0 0 0 6px var(--accent)}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--canvas);padding:10px 16px;border-radius:999px;transition:top .3s var(--e1)}
.skip:focus{top:12px}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase}

/* background: soft light plus rising bubbles */
.env{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.env::before,.env::after{content:"";position:absolute;width:70vmax;height:70vmax;border-radius:50%;filter:blur(60px);opacity:.55}
.env::before{left:-20vmax;top:-25vmax;background:radial-gradient(circle,rgba(189,144,253,.55),rgba(189,144,253,0) 65%);animation:drift 74s var(--e2) infinite alternate}
.env::after{right:-25vmax;bottom:-30vmax;background:radial-gradient(circle,rgba(230,204,151,.55),rgba(230,204,151,0) 65%);animation:drift 88s var(--e2) infinite alternate-reverse}
@keyframes drift{from{transform:translate3d(0,0,0)}to{transform:translate3d(12vmax,9vmax,0)}}
.bub{position:absolute;bottom:-30px;width:var(--s);height:var(--s);border-radius:50%;opacity:0;border:1px solid rgba(110,103,136,.34);background:radial-gradient(circle at 30% 28%,rgba(255,255,255,.95),rgba(255,255,255,.18) 38%,var(--tint,rgba(189,144,253,.10)) 70%,rgba(255,255,255,0) 100%);box-shadow:inset 0 0 6px rgba(255,255,255,.6);animation:rise var(--d) linear infinite;animation-delay:var(--dl)}
@keyframes rise{0%{transform:translate3d(0,0,0);opacity:0}7%{opacity:var(--o,.8)}50%{transform:translate3d(calc(var(--x)*-.6),-56vh,0)}90%{opacity:var(--o,.8)}100%{transform:translate3d(var(--x),-112vh,0);opacity:0}}

/* glass */
.glass{position:relative;background:linear-gradient(135deg,rgba(255,255,255,.6),rgba(255,255,255,.2) 58%,rgba(255,255,255,.34));-webkit-backdrop-filter:blur(18px) saturate(170%);backdrop-filter:blur(18px) saturate(170%);border:1px solid rgba(255,255,255,.72);box-shadow:inset 0 1px 0 rgba(255,255,255,.95),inset 0 -1px 0 rgba(255,255,255,.3),0 18px 48px rgba(22,19,31,.09)}
.glass::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:linear-gradient(118deg,rgba(255,255,255,.5) 0%,rgba(255,255,255,0) 26%,rgba(255,255,255,0) 74%,rgba(189,144,253,.16) 100%)}
.glass > *{position:relative;z-index:1}

/* nav */
.nav{position:fixed;z-index:50;top:max(16px,env(safe-area-inset-top));left:50%;transform:translateX(-50%);width:min(1240px,calc(100% - 32px));display:flex;align-items:center;gap:28px;padding:14px 16px 14px 28px;border-radius:999px;background:rgba(248,246,251,.72)}
.nav .logo{height:34px;width:auto}
.nav ul{display:flex;gap:26px;margin:0 auto;padding:0;list-style:none}
.nav ul a{text-decoration:none;font-size:1.02rem;font-weight:600;color:var(--text-secondary);transition:color .3s var(--e1)}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--ink)}
.nav ul a[aria-current]{text-decoration:underline;text-decoration-color:var(--lilac);text-decoration-thickness:2px;text-underline-offset:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:600 .95rem/1 var(--body);text-decoration:none;border:0;border-radius:999px;padding:14px 22px;cursor:pointer;transition:transform .35s var(--e1),background-color .35s var(--e1)}
.btn-cta{background:var(--accent);color:var(--ink);box-shadow:0 8px 24px rgba(184,206,30,.35)}
.btn-cta:hover{background:var(--accent-hover);transform:translateY(-2px)}
.btn-ghost{background:rgba(22,19,31,.06);color:var(--ink);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:rgba(22,19,31,.1);transform:translateY(-2px)}
.nav .btn{padding:14px 24px;font-size:1rem}
@media (pointer:coarse){.btn{min-height:44px}}
@media (max-width:1000px){.nav ul{display:none}.nav .btn{margin-left:auto}}
@media (max-width:560px){.nav{padding:10px 10px 10px 18px}.nav .logo{height:28px}.nav .btn{padding:11px 16px;font-size:.9rem}}

/* layout */
.wrap{width:min(1080px,100%);margin:0 auto}
.narrow > *{max-width:760px}
section{padding:clamp(40px,5.5vw,80px) 20px;scroll-margin-top:110px}
.head{padding:clamp(140px,16vw,190px) 20px clamp(32px,4vw,48px)}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px;padding:0;list-style:none;color:var(--text-secondary)}
.crumbs li+li::before{content:"/";margin-right:8px;opacity:.6}
.crumbs a{text-decoration:none}
.crumbs a:hover{text-decoration:underline}
.kicker{display:inline-flex;align-items:center;gap:10px;color:var(--text-secondary)}
.kicker::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--lilac)}
h1{font:800 clamp(2.6rem,6.4vw,5.4rem)/.98 var(--display);letter-spacing:-.04em;margin:18px 0 0;max-width:16ch}
h2{font:800 clamp(1.9rem,3.6vw,3rem)/1.04 var(--display);letter-spacing:-.03em;margin:14px 0 0;max-width:22ch}
h3{font:700 1.25rem/1.2 var(--display);letter-spacing:-.015em;margin:0}
.lede{max-width:58ch;color:var(--text-secondary);font-size:1.18rem;margin:22px 0 0}
p{max-width:68ch}
.updated{margin-top:22px;color:var(--text-secondary)}

/* the quick answer: written to be quoted whole */
.answer{border-radius:28px;padding:clamp(24px,3.4vw,40px);margin-top:36px}
.answer .mono{color:var(--champagne-deep)}
.answer p{font-size:clamp(1.12rem,1.6vw,1.3rem);line-height:1.55;margin:12px 0 0;max-width:none}
.aka{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.aka span{font-size:.88rem;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.55);border:1px solid var(--line)}

/* key numbers */
.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}
.num{border-radius:22px;padding:22px 20px}
.num b{display:block;font:800 clamp(1.8rem,3vw,2.5rem)/1 var(--display);letter-spacing:-.03em}
.num span{display:block;margin-top:10px;font-size:.95rem;color:var(--text-secondary);line-height:1.45}
@media (max-width:860px){.nums{grid-template-columns:repeat(2,1fr)}}

/* tables */
.tbl{margin-top:30px;border-radius:24px;overflow:hidden;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.98rem;min-width:560px}
caption{caption-side:top;text-align:left;padding:18px 22px 0;color:var(--text-secondary)}
th,td{text-align:left;vertical-align:top;padding:14px 22px;border-bottom:1px solid var(--line)}
thead th{font:700 .95rem/1.3 var(--display);background:rgba(255,255,255,.45)}
tbody th{font-weight:600}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
td.us{background:rgba(232,252,86,.22);font-weight:600}
thead th.us{background:rgba(232,252,86,.5)}

/* scale diagram */
.scale{border-radius:28px;padding:clamp(22px,3vw,36px);margin-top:30px}
.scale ol{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:16px}
.scale li{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:center}
.scale .dot{justify-self:center;border-radius:50%;border:1px solid rgba(110,103,136,.45);background:radial-gradient(circle at 30% 28%,#fff,rgba(255,255,255,.3) 40%,rgba(189,144,253,.25) 75%)}
.scale b{display:block;font:700 1.08rem/1.25 var(--display)}
.scale span{color:var(--text-secondary);font-size:.95rem}

/* steps and cards */
.steps{list-style:none;margin:30px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:s}
.steps li{border-radius:24px;padding:24px;counter-increment:s}
.steps li::before{content:"0" counter(s);font:500 .78rem var(--mono);letter-spacing:.14em;color:var(--champagne-deep)}
.steps h3{margin-top:10px}
.steps p{margin:8px 0 0;color:var(--text-secondary);font-size:.98rem}
@media (max-width:760px){.steps{grid-template-columns:1fr}}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,64px);align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.diagram{border-radius:32px;padding:22px}
.diagram figcaption{margin-top:12px;color:var(--text-secondary);font-size:.92rem}
.list{margin:20px 0 0;padding-left:1.2em}
.list li{margin:8px 0}
.list li::marker{color:var(--champagne-deep)}
.prods{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:30px}
.prod{border-radius:24px;overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:transform .5s var(--e1)}
.prod:hover{transform:translateY(-4px)}
.prod img{width:100%;aspect-ratio:4/5;object-fit:cover}
.prod div{padding:18px 20px 22px}
.prod .mono{color:var(--text-secondary)}
.prod h3{margin-top:6px}
.prod p{margin:8px 0 0;font-size:.95rem;color:var(--text-secondary)}
.note{font-size:.9rem;color:var(--text-secondary)}
.vid{border-radius:28px;overflow:hidden;margin:30px 0 0}
.vid video{width:100%;height:auto;aspect-ratio:16/9;background:#16131F}
.vid figcaption{padding:16px 22px;color:var(--text-secondary);font-size:.95rem}

/* faq */
details{border-radius:20px;margin-bottom:12px;padding:0 18px}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:18px;padding:22px 4px;font:600 clamp(1.08rem,1.5vw,1.25rem)/1.3 var(--display)}
summary::-webkit-details-marker{display:none}
summary .pm{flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--line-strong);position:relative;transition:transform .5s var(--e1),background-color .5s var(--e1)}
summary .pm::before,summary .pm::after{content:"";position:absolute;left:50%;top:50%;width:12px;height:1.5px;margin:-.75px 0 0 -6px;background:var(--ink);transition:transform .5s var(--e1)}
summary .pm::after{transform:rotate(90deg)}
details[open] summary .pm{transform:rotate(180deg);background:var(--champagne)}
details[open] summary .pm::after{transform:rotate(0)}
details .ans{padding:0 4px 24px;margin:0;color:var(--text-secondary)}

/* closing call */
.cta{border-radius:36px;padding:clamp(32px,5vw,64px);text-align:center;background:var(--ink);color:#F1EEF8}
.cta h2{margin:0 auto;max-width:20ch}
.cta p{margin:16px auto 0;color:#CFC8E0}
.cta .row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px}
.cta .btn-ghost{color:#F1EEF8;border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.06)}

/* footer */
footer{padding:64px 20px 40px}
.foot{width:min(1080px,100%);margin:0 auto;display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;padding-top:36px;border-top:1px solid var(--line-strong)}
.foot img{height:30px;width:auto}
.foot p,.foot a{font-size:.92rem;color:var(--text-secondary)}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:8px;align-content:start}
.disclaim{width:min(1080px,100%);margin:36px auto 0;font-size:.78rem;color:var(--text-secondary)}
@media (max-width:760px){.foot{grid-template-columns:1fr 1fr}}

/* entrances */
.rv{opacity:0;transform:translateY(22px);transition:opacity .9s var(--e1),transform .9s var(--e1)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .env::before,.env::after,.bub{animation:none}
  .bub{display:none}
  html{scroll-behavior:auto}
}