/* Red Thread Mysteries — studio styles.
   Brand: deep charcoal, ivory, one red thread. Playfair Display for headlines, Inter for everything else.
   Studio tokens are prefixed --rt- so a game page's own palette (e.g. the Larkspur's gold) never leaks into the studio header and footer.
   One deliberate dark world; no light theme. */
@font-face{font-family:'Playfair Display';src:url(/assets/fonts/playfair-500.woff2) format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Playfair Display';src:url(/assets/fonts/playfair-600.woff2) format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Playfair Display';src:url(/assets/fonts/playfair-400i.woff2) format('woff2');font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:'Inter';src:url(/assets/fonts/inter-400.woff2) format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Inter';src:url(/assets/fonts/inter-600.woff2) format('woff2');font-weight:600 700;font-style:normal;font-display:swap}
:root{
  --rt-bg:#0B0F14;          /* Deep Charcoal (primary) */
  --rt-surface:#12171E;     /* raised panels */
  --rt-surface-2:#181F28;
  --rt-line:#262E39;
  --rt-ivory:#F7F6EF;       /* Ivory: headings, primary text */
  --rt-text-2:#C9CCD1;      /* body copy on charcoal */
  --rt-steel:#8A8F98;       /* Steel (supporting): captions, labels */
  --rt-red:#E11B22;         /* Red Thread (accent): marks, threads, large accents */
  --rt-red-text:#F0464C;    /* the red for small text and links on charcoal (5.2:1) */
  --rt-btn:#C8141B;         /* button red, ivory text reads at 5.4:1 */
  --rt-serif:'Playfair Display',Georgia,'Times New Roman',serif;
  --rt-sans:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{background:var(--rt-bg)}
body{margin:0;background:var(--rt-bg);color:var(--rt-ivory);font:400 1.0625rem/1.65 var(--rt-sans);-webkit-font-smoothing:antialiased}
a{color:var(--rt-red-text);text-underline-offset:.18em}
img{max-width:100%;display:block}
.wrap{width:min(70rem,100%);margin:0 auto;padding-inline:clamp(16px,4vw,40px)}
.wrap.narrow{width:min(44rem,100%)}
h1,h2,h3{font-family:var(--rt-serif);font-weight:500;line-height:1.12;letter-spacing:-.005em;text-wrap:balance;margin:0;color:var(--rt-ivory)}
p{text-wrap:pretty}
.kicker{display:flex;align-items:center;gap:.75rem;font-size:.75rem;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--rt-steel);margin:0}
.kicker::before{content:"";width:1.6rem;height:2px;background:var(--rt-red);flex:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;font:600 1rem/1 var(--rt-sans);letter-spacing:.01em;padding:.95em 1.5em;border-radius:.35rem;text-decoration:none;border:1px solid var(--rt-ivory);color:var(--rt-ivory);background:transparent;cursor:pointer;transition:background .15s,border-color .15s}
.btn:hover{background:rgba(247,246,239,.08)}
.btn.primary{background:var(--rt-btn);border-color:var(--rt-btn);color:var(--rt-ivory)}
.btn.primary:hover{background:var(--rt-red);border-color:var(--rt-red)}
.btn.small{padding:.6em 1em;font-size:.9rem}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--rt-ivory);outline-offset:3px}
.btn[disabled]{opacity:.55;cursor:default}

/* logo lockup: R mark | RED THREAD / MYSTERIES */
.rt-logo{display:inline-flex;align-items:center;gap:.7rem;color:var(--rt-ivory);text-decoration:none;line-height:1}
.rt-logo .mark{width:2.6rem;height:auto;flex:none}
.rt-logo .rule{width:1px;align-self:stretch;background:rgba(247,246,239,.45);margin-block:.15rem}
.rt-logo .word{display:inline-grid;gap:.36rem;justify-items:stretch}
/* the top line sets the width; letter-spacing adds space after the last letter, so pull it back to keep the right edge true */
.rt-logo .word b{font:600 1.05rem/1 var(--rt-serif);letter-spacing:.08em;margin-right:-.08em;text-transform:uppercase;white-space:nowrap}
/* MYSTERIES: each letter spaced evenly from the first letter of RED to the last of THREAD */
.rt-logo .word .spread{display:flex;justify-content:space-between;font:600 .56rem/1 var(--rt-sans);text-transform:uppercase;color:var(--rt-text-2)}

/* site header — scoped selectors so a game page's own .btn and link styles can't restyle it */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(11,15,20,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--rt-line);font-family:var(--rt-sans)}
.site-head .wrap{display:flex;align-items:center;gap:1rem 1.6rem;min-height:4.1rem;flex-wrap:wrap}
.site-head .rt-logo{margin-right:auto}
.site-nav{display:flex;flex-wrap:wrap;align-items:center;gap:.2rem 1.3rem;font-size:.92rem}
.site-head .site-nav a{color:var(--rt-text-2);text-decoration:none;padding-block:.45rem}
.site-head .site-nav a:hover,.site-head .site-nav a[aria-current="page"]{color:var(--rt-ivory)}
.site-head .site-nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--rt-red)}
.site-head .site-nav .btn{padding:.6em 1.05em;font:600 .88rem/1 var(--rt-sans);background:var(--rt-btn);border:1px solid var(--rt-btn);color:var(--rt-ivory);border-radius:.35rem;box-shadow:none}
.site-head .site-nav .btn:hover{background:var(--rt-red)}
@media (max-width:40rem){.site-head{position:static}.site-head .wrap{padding-block:.6rem}.site-nav{width:100%;justify-content:space-between;gap:.2rem .9rem;font-size:.88rem}}

/* page furniture */
.page-head{padding-block:clamp(3rem,8vw,5.5rem) clamp(1.8rem,4vw,2.8rem);border-bottom:1px solid var(--rt-line)}
.page-head h1{font-size:clamp(2.3rem,5.5vw,3.8rem);margin:1rem 0 .9rem;max-width:20ch}
.page-head .lede{color:var(--rt-text-2);font-size:clamp(1.05rem,1rem + .4vw,1.25rem);max-width:40rem;margin:0}
section.band{padding-block:clamp(3rem,7vw,5.5rem);border-top:1px solid var(--rt-line)}
section.band:first-of-type{border-top:0}
.band h2{font-size:clamp(1.8rem,3.4vw,2.6rem);margin:.9rem 0 1rem}
.band .intro{max-width:40rem;color:var(--rt-text-2);margin:0 0 2rem}
.prose{max-width:40rem}
.wrap.prose{max-width:none}.wrap.prose>*{max-width:40rem}
.prose h2{font-size:clamp(1.5rem,3vw,2rem);margin:2.6rem 0 .8rem}
.prose h3{font-size:1.3rem;margin:1.8rem 0 .5rem}
.prose p,.prose li{color:var(--rt-text-2)}
.prose strong{color:var(--rt-ivory);font-weight:600}
.prose ul,.prose ol{padding-left:1.2rem}
.prose li{margin-block:.35rem}
.prose li::marker{color:var(--rt-red)}
.prose blockquote{margin:1.6rem 0;padding:.2rem 0 .2rem 1.2rem;border-left:2px solid var(--rt-red);color:var(--rt-ivory);font:italic 400 1.2rem/1.5 var(--rt-serif)}
.fine{color:var(--rt-steel);font-size:.9rem}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:1.8rem 2.2rem;counter-reset:step;margin:0;padding:0;list-style:none}
.steps li{counter-increment:step;display:grid;gap:.45rem;align-content:start;padding-top:1rem;border-top:1px solid var(--rt-line);position:relative}
.steps li::after{content:"";position:absolute;top:-1px;left:0;width:2.2rem;height:2px;background:var(--rt-red)}
.steps li::before{content:counter(step,decimal-leading-zero);font:500 .8rem/1 var(--rt-sans);letter-spacing:.2em;color:var(--rt-steel)}
.steps b{font-family:var(--rt-serif);font-weight:500;font-size:1.35rem}
.steps p{margin:0;color:var(--rt-text-2)}
.faq{display:grid;gap:.6rem;max-width:46rem}
.faq details{background:var(--rt-surface);border:1px solid var(--rt-line);border-radius:.4rem;padding:.95rem 1.15rem}
.faq details[open]{border-color:#39434f}
.faq summary{cursor:pointer;font-weight:600}
.faq summary::marker{color:var(--rt-red)}
.faq p{margin:.6rem 0 0;color:var(--rt-text-2)}
.cta{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}

/* review cards */
.reviews{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1.2rem}
.review{background:var(--rt-surface);border:1px solid var(--rt-line);border-radius:.45rem;padding:1.3rem 1.4rem;display:grid;gap:.7rem;align-content:start;margin:0}
.review .stars{color:var(--rt-red);letter-spacing:.15em}
.review blockquote{margin:0;color:var(--rt-ivory);font:italic 400 1.15rem/1.5 var(--rt-serif)}
.review figcaption{color:var(--rt-steel);font-size:.88rem}

/* sign-up */
.signup{display:flex;flex-wrap:wrap;gap:.6rem;max-width:32rem}
.signup input{flex:1 1 14rem;min-width:0;font:inherit;color:var(--rt-ivory);background:var(--rt-surface);border:1px solid var(--rt-line);border-radius:.35rem;padding:.8em 1em}
.signup input::placeholder{color:var(--rt-steel)}
.signup .msg{flex-basis:100%;margin:.2rem 0 0;font-size:.95rem;color:var(--rt-text-2)}
.signup .msg.ok{color:var(--rt-ivory)}
.signup .msg.ok::before{content:"● ";color:var(--rt-red)}

/* footer */
.site-foot{border-top:1px solid var(--rt-line);padding-block:3rem 3.5rem;color:var(--rt-steel);font:400 .9rem/1.6 var(--rt-sans);background:var(--rt-bg)}
.site-foot .wrap{display:grid;gap:1.4rem}
.site-foot .cols{display:flex;flex-wrap:wrap;gap:1.4rem 2.5rem;justify-content:space-between;align-items:center}
.site-foot nav{display:flex;flex-wrap:wrap;gap:.4rem 1.3rem}
.site-foot a{color:var(--rt-text-2)}
.site-foot a:hover{color:var(--rt-ivory)}
.site-foot .rt-logo{color:var(--rt-ivory);text-decoration:none}
.site-foot .tagline{font:italic 400 1.05rem/1.4 var(--rt-serif);color:var(--rt-text-2)}
.site-foot p{margin:0}