/* FaceFacts v2 · mobile-first. Brand: brand/logo-anim (WINTER house palette, Source Serif Pro Black + Inter). */
@font-face{font-family:"Inter";src:url(../fonts/inter-var.woff) format("woff");font-weight:100 900;font-display:swap}
@font-face{font-family:"Source Serif";src:url(../fonts/source-serif-black.woff) format("woff");font-weight:900;font-display:swap}

:root{
  --bg:#0E141B; --bg-2:#121A23; --card:#16202B; --card-2:#1B2733; --line:#24313F; --line-2:#2F3E4E;
  --ink:#F4F1EA; --text:#D9DCE1; --muted:#8C99AD; --mint:#3CC8A8; --mint-ink:#062019; --amber:#E9B949; --red:#F07B6E;
  --serif:"Source Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:14px; --wrap:1120px; --gut:20px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--text);font:400 1rem/1.6 var(--sans);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--mint);text-underline-offset:3px}
a:hover{color:var(--ink)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}
h1,h2,h3{color:var(--ink);line-height:1.15;margin:0 0 .6em}
h1{font:900 clamp(2.1rem,7.4vw,3.6rem)/1.06 var(--serif);letter-spacing:-.01em}
h2{font:900 clamp(1.5rem,4.6vw,2.15rem)/1.12 var(--serif)}
h3{font-size:1.06rem;font-weight:650;line-height:1.3}
p{margin:0 0 1em}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.skip{position:absolute;left:-999px;top:8px;background:var(--mint);color:var(--mint-ink);padding:.5rem .9rem;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.muted{color:var(--muted)} .small{font-size:.875rem}
.eyebrow{display:block;color:var(--mint);font-size:.75rem;font-weight:650;letter-spacing:.16em;text-transform:uppercase;margin-bottom:.8rem}
.lead{font-size:1.08rem;color:var(--text);max-width:40rem}
.accent{color:var(--mint)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,20,27,.92);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:1rem}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink)}
.brand svg{width:40px;height:auto}
.wordmark{font:900 1.3rem/1 var(--serif);color:var(--ink);letter-spacing:-.005em}
.wordmark b{color:var(--mint);font-weight:900}
.nav-toggle{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);background:var(--card);color:var(--ink);cursor:pointer}
.nav-toggle svg{width:22px;height:22px}
.site-nav{position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);display:none}
.site-nav.open{display:block}
.site-nav ul{list-style:none;margin:0;padding:.5rem var(--gut) 1rem}
.site-nav a{display:block;padding:.8rem .2rem;color:var(--text);text-decoration:none;font-weight:550;border-bottom:1px solid var(--line)}
.site-nav li:last-child a{border-bottom:0}
.site-nav a[aria-current=page]{color:var(--mint)}
.no-js .site-nav{display:block;position:static;border:0}
.no-js .nav-toggle{display:none}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.75rem 1.2rem;border-radius:999px;border:1px solid var(--line-2);background:var(--card);color:var(--ink);font:600 .98rem/1 var(--sans);text-decoration:none;cursor:pointer}
.btn svg{width:18px;height:18px}
.btn:hover{border-color:var(--muted);color:var(--ink)}
.btn-primary{background:var(--mint);border-color:var(--mint);color:var(--mint-ink)}
.btn-primary:hover{background:#5ad6b9;border-color:#5ad6b9;color:var(--mint-ink)}
.btn-block{width:100%}

/* sections */
.section{padding:3rem 0}
.section + .section{padding-top:0}
.section-head{margin-bottom:1.6rem}
.section-head .lead{margin-bottom:0}
.page-head{padding:2.4rem 0 1.6rem}
.hero{position:relative;padding:2.6rem 0 2.8rem;overflow:hidden;border-bottom:1px solid var(--line)}
.hero .mark-bg{position:absolute;right:-60px;bottom:-30px;width:360px;opacity:.09;pointer-events:none}
.hero .tagline{font:600 .8rem/1 var(--sans);letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin:1.1rem 0 1.2rem}
.hero .tagline span{color:var(--amber)}
.hero h1 b{color:var(--mint);font-weight:900}

/* grids & cards */
.grid{display:grid;gap:1rem;grid-template-columns:1fr}
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem;display:flex;flex-direction:column}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:.8rem}
.card .meta{margin-top:auto;font-size:.88rem;font-weight:600;color:var(--mint)}
.card-link:hover{border-color:var(--line-2);background:var(--card-2)}
.stretch::after{content:"";position:absolute;inset:0;border-radius:var(--r)}
.icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:rgba(60,200,168,.1);color:var(--mint);margin-bottom:.9rem}
.icon svg{width:22px;height:22px}
.tag{display:inline-block;align-self:flex-start;font-size:.7rem;font-weight:650;letter-spacing:.08em;text-transform:uppercase;padding:.28rem .6rem;border-radius:999px;border:1px solid var(--line-2);color:var(--muted);margin-bottom:.7rem}
.tag-mint{color:var(--mint);border-color:rgba(60,200,168,.35)}
.tag-amber{color:var(--amber);border-color:rgba(233,185,73,.35)}

/* presentation cards */
.pres{padding:0;overflow:hidden}
.pres .thumb{aspect-ratio:16/9;background:var(--bg-2);border-bottom:1px solid var(--line)}
.pres .thumb img{width:100%;height:100%;object-fit:cover}
.pres .body{padding:1rem 1.1rem 1.15rem;display:flex;flex-direction:column;flex:1}
.pres .row{display:flex;flex-wrap:wrap;gap:.4rem .6rem;align-items:center;margin-bottom:.5rem}
.pres .row .tag{margin:0}
.kw{font:700 .72rem/1 var(--sans);letter-spacing:.12em;color:var(--amber)}
.pres h3{margin-bottom:.4rem}
.pres.soon .thumb img{opacity:.45;filter:grayscale(.4)}
.filters{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.4rem;margin:0 0 1.2rem;scrollbar-width:none}
.filters::-webkit-scrollbar{display:none}
.chip{flex:none;min-height:40px;padding:.5rem 1rem;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--text);font:600 .88rem/1 var(--sans);cursor:pointer}
.chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:var(--bg)}

/* videos */
.yt{position:relative;display:block;width:100%;aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:#000;border:1px solid var(--line)}
.yt.short{aspect-ratio:9/16}
.yt img{width:100%;height:100%;object-fit:cover;transition:transform .3s,opacity .3s}
.yt:hover img{transform:scale(1.02);opacity:.9}
.yt .play{position:absolute;left:50%;top:50%;width:64px;height:64px;margin:-32px 0 0 -32px;border-radius:50%;background:rgba(14,20,27,.82);border:1px solid rgba(244,241,234,.35);display:grid;place-items:center;color:var(--ink)}
.yt .play svg{width:26px;height:26px;margin-left:4px}
.yt iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video h3{font-size:.98rem;margin:.7rem 0 .2rem}
.video .dur{font-size:.8rem;color:var(--muted)}
.feature{display:grid;gap:1.2rem;align-items:center}
.shorts{display:grid;grid-template-columns:repeat(2,1fr);gap:.9rem}
.shorts h3{font-size:.86rem;font-weight:600;margin:.55rem 0 0;color:var(--text)}

/* callout & notice */
.callout{background:linear-gradient(140deg,var(--card-2),var(--card));border:1px solid var(--line-2);border-radius:18px;padding:1.6rem}
.notice{border:1px solid rgba(233,185,73,.35);background:rgba(233,185,73,.07);border-radius:var(--r);padding:1rem 1.1rem;color:var(--text);font-size:.95rem}
.prose{max-width:44rem}
.prose h2{margin-top:2rem}
.prose ul{padding-left:1.2rem}
.prose li{margin-bottom:.5rem}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:.7rem}
.steps li{display:flex;gap:.8rem;align-items:flex-start}
.steps b{flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--card-2);color:var(--amber);font-size:.85rem}

/* question bank */
.qb-bar{position:sticky;top:60px;z-index:20;background:rgba(14,20,27,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line);margin:0 calc(-1 * var(--gut)) 1.2rem;padding:.7rem var(--gut)}
.qb-bar .score{display:flex;justify-content:space-between;align-items:center;font-size:.9rem;font-weight:600;color:var(--ink);margin-bottom:.5rem}
.progress{height:6px;border-radius:99px;background:var(--line);overflow:hidden}
.progress span{display:block;height:100%;width:0;background:var(--mint);transition:width .3s}
.q{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.15rem;margin:0 0 1rem}
.q fieldset{border:0;margin:0;padding:0;min-width:0}
.q legend{padding:0;color:var(--ink);font-weight:620;font-size:1.02rem;line-height:1.45;margin-bottom:.9rem}
.q .qn{display:block;font-size:.72rem;font-weight:650;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.45rem}
.opt{display:flex;gap:.75rem;align-items:flex-start;padding:.8rem .9rem;margin-bottom:.55rem;border:1px solid var(--line-2);border-radius:12px;cursor:pointer;line-height:1.45;min-height:48px}
.opt:hover{border-color:var(--muted)}
.opt input{flex:none;width:20px;height:20px;margin:.1rem 0 0;accent-color:var(--mint)}
.opt .l{flex:none;font-weight:700;color:var(--muted);width:1.1rem}
.opt.correct{border-color:var(--mint);background:rgba(60,200,168,.1)}
.opt.wrong{border-color:var(--red);background:rgba(240,123,110,.09)}
.q.done .opt{cursor:default}
.q.done .opt:not(.correct):not(.wrong){opacity:.6}
.fb{margin-top:.6rem;padding:.9rem 1rem;border-radius:12px;background:var(--bg-2);border:1px solid var(--line)}
.fb .verdict{font-weight:700;margin-bottom:.35rem}
.fb .verdict.ok{color:var(--mint)} .fb .verdict.no{color:var(--red)}
.fb p{font-size:.95rem;margin-bottom:.6rem}
.cite{display:flex;gap:.5rem;font-size:.85rem;color:var(--muted);margin:0}
.cite svg{flex:none;width:16px;height:16px;margin-top:.2rem;color:var(--amber)}
.q details{margin-top:.5rem}
.q summary{cursor:pointer;color:var(--mint);font-weight:600}
.js .q summary{display:none}
[hidden]{display:none!important}
.result{text-align:center}
.result .big{font:900 3rem/1 var(--serif);color:var(--ink);margin:.4rem 0}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:2.5rem 0 1.5rem;margin-top:2rem;background:var(--bg-2)}
.footer-grid{display:grid;gap:1.8rem}
.site-footer h2{font:650 .75rem/1 var(--sans);letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:.55rem}
.site-footer a{color:var(--text);text-decoration:none}
.site-footer a:hover{color:var(--mint)}
.social{display:flex;gap:.6rem;margin-top:1rem}
.social a{display:grid;place-items:center;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);color:var(--ink)}
.social svg{width:20px;height:20px}
.disclaimer{display:flex;flex-direction:column;gap:.4rem;margin-top:2rem;padding-top:1.2rem;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.disclaimer strong{color:var(--text)}

/* ≥ 600px */
@media (min-width:600px){
  :root{--gut:28px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .shorts{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:2fr 1fr 1fr}
  .disclaimer{flex-direction:row;justify-content:space-between}
  .section{padding:4rem 0}
  .hero{padding:4.5rem 0}
  .hero .mark-bg{width:520px;right:-40px}
}
/* ≥ 920px */
@media (min-width:920px){
  .nav-toggle{display:none}
  .site-nav,.no-js .site-nav{display:block;position:static;background:none;border:0}
  .site-nav ul{display:flex;gap:.2rem;padding:0}
  .site-nav a{border:0;padding:.5rem .7rem;border-radius:10px;font-size:.92rem}
  .site-nav a:hover{background:var(--card)}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
  .feature{grid-template-columns:1.5fr 1fr;gap:2rem}
  .shorts{grid-template-columns:repeat(4,1fr)}
  .hero{padding:6rem 0 5.5rem}
  .hero .mark-bg{width:640px;right:0;bottom:-10px;opacity:.11}
  .qb-wrap{max-width:46rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.h3{font:650 1.06rem/1.3 var(--sans);color:var(--ink);margin:0 0 .6em}
.grid + .notice,.grid + .callout,.grid + .btns,.callout + .notice,.q + .notice{margin-top:1.5rem}
.notice p:last-child,.callout p:last-child{margin-bottom:0}
.card h2,.card h3{font:650 1.06rem/1.3 var(--sans);color:var(--ink)}
.pres h2,.pres h3{font-size:1.1rem}
.stretch{color:var(--ink);text-decoration:none}
.card-link:hover .stretch{color:var(--mint)}
.hero .mark-bg svg path,.hero .mark-bg svg circle{stroke-width:1.6px}
.hero .mark-bg svg circle{r:2.2px}