/* Fitness Expansion — editorial magazine system.
   White paper, hairline rules, Fraunces display over Source Serif 4 body,
   mono kickers. Committed to light: no dark-mode switch. */

:root{
  --paper:#FFFFFF; --paper-2:#F7F5F0; --paper-3:#EFEBE3;
  --ink:#17150F; --ink-2:#403B31; --muted:#6A6255;
  --rule:#DFD9CE; --rule-strong:#17150F;
  --accent:#8A1C1C;            /* oxblood, for links and marks */
  --gold:#B8860B;              /* brand gold, darkened for contrast on paper */
  --gold-flat:#F2B705;         /* brand gold, graphic use only */
  --font-display:"Fraunces","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --font-body:"Source Serif 4","Iowan Old Style",Georgia,"Times New Roman",serif;
  --font-mono:"IBM Plex Mono",Menlo,Consolas,monospace;
  --measure:70ch; --radius:2px;
  color-scheme:light;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--font-body); font-size:19px; line-height:1.65;
  font-variant-numeric:oldstyle-nums;
}
img{max-width:100%;height:auto}
a{color:var(--ink); text-decoration:underline; text-decoration-thickness:1px; text-underline-offset:3px; text-decoration-color:var(--rule)}
a:hover{text-decoration-color:var(--accent); color:var(--accent)}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px}

.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- masthead ---------- */
.site-header{border-bottom:1px solid var(--rule-strong);background:var(--paper)}
.site-header .wrap{display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding-top:18px;padding-bottom:14px;flex-wrap:wrap}
.brand{
  font-family:var(--font-display); font-weight:700; font-size:1.45rem;
  letter-spacing:-.02em; text-decoration:none; color:var(--ink);
}
.brand span{display:inline-block;width:.5rem;height:.5rem;background:var(--gold-flat);margin-right:.5rem;transform:translateY(-.15rem)}
.nav{display:flex;gap:1.35rem;flex-wrap:wrap}
.nav a{
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.11em;
  text-transform:uppercase; text-decoration:none; color:var(--ink-2);
  padding-bottom:2px; border-bottom:2px solid transparent;
}
.nav a:hover{color:var(--ink);border-bottom-color:var(--gold-flat)}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--rule-strong)}

/* ---------- kickers, hero ---------- */
.eyebrow,.breadcrumb{
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.13em;
  text-transform:uppercase; color:var(--muted); margin:0 0 .9rem;
}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--accent)}

.hero{border-bottom:1px solid var(--rule);padding:3.5rem 0 2.75rem;background:var(--paper)}
.hero h1{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(2.4rem,6.2vw,4.4rem); line-height:1.02;
  letter-spacing:-.028em; margin:0 0 1.1rem; max-width:19ch;
  font-variation-settings:"SOFT" 0,"WONK" 1,"opsz" 144;
}
.hero .lead{max-width:56ch}
.lead{font-size:1.22rem;line-height:1.6;color:var(--ink-2);margin:0}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:3rem;align-items:end}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:2rem}}

/* ---------- article grid ---------- */
main.article{
  display:grid; grid-template-columns:minmax(0,var(--measure)) 260px;
  gap:4rem; padding:3rem 24px 4rem; align-items:start;
}
@media(max-width:1000px){main.article{grid-template-columns:1fr;gap:2.5rem}}
main.article article>*{max-width:100%}

h2{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(1.6rem,3.2vw,2.15rem); line-height:1.12; letter-spacing:-.02em;
  margin:3.25rem 0 1rem; padding-top:1.25rem; border-top:1px solid var(--rule);
  font-variation-settings:"SOFT" 0,"WONK" 1,"opsz" 72;
}
main.article article>h2:first-of-type{margin-top:2rem}
h3{font-family:var(--font-display);font-weight:600;font-size:1.25rem;line-height:1.25;margin:2rem 0 .6rem;letter-spacing:-.01em}
p{margin:0 0 1.15rem}
ul,ol{margin:0 0 1.3rem;padding-left:1.3rem}
li{margin-bottom:.55rem}
strong{font-weight:700}
em{font-style:italic}

/* opening paragraph gets the magazine drop cap */
main.article article>h2:first-of-type + p::first-letter{
  font-family:var(--font-display); font-weight:700; float:left;
  font-size:3.9em; line-height:.82; padding:.06em .09em 0 0; color:var(--ink);
}

/* ---------- figures ---------- */
figure{margin:2rem 0}
.hero-img{margin:0}
.hero-img img,.sec-img img{display:block;width:100%;height:auto;border:1px solid var(--rule)}
.sec-img{margin:2.25rem 0}
figcaption{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.04em;color:var(--muted);margin-top:.6rem}

/* ---------- callout, sidenotes ---------- */
.callout{
  border-left:3px solid var(--gold-flat); background:var(--paper-2);
  padding:1.05rem 1.25rem; margin:2rem 0; font-size:.97rem; color:var(--ink-2);
}
.callout strong{color:var(--ink)}
.todo{background:var(--paper-3);border-bottom:1px dashed var(--muted);padding:0 .2em;color:var(--muted);font-family:var(--font-mono);font-size:.85em}
.gold{color:var(--gold)}

/* ---------- table of contents ---------- */
.toc{
  position:sticky; top:2rem; border-top:2px solid var(--rule-strong);
  padding-top:.9rem; font-size:.9rem;
}
@media(max-width:1000px){.toc{position:static}}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc}
.toc li{counter-increment:toc;margin-bottom:.45rem;display:flex;gap:.6rem;align-items:baseline}
.toc li::before{
  content:counter(toc,decimal-leading-zero); font-family:var(--font-mono);
  font-size:.68rem; color:var(--gold); letter-spacing:.04em;
}
.toc a{text-decoration:none;color:var(--ink-2)}
.toc a:hover{color:var(--accent);text-decoration:underline}

/* ---------- FAQ ---------- */
.faq{margin-top:1rem}
.faq h2{margin-top:3.25rem}
.faq details{border-bottom:1px solid var(--rule);padding:.9rem 0}
.faq summary{
  cursor:pointer; font-family:var(--font-display); font-weight:600;
  font-size:1.05rem; line-height:1.35; list-style:none;
  display:flex; justify-content:space-between; gap:1rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-mono);color:var(--gold);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq p{margin:.75rem 0 .15rem;color:var(--ink-2);font-size:.98rem}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto;margin:2rem 0;border-top:2px solid var(--rule-strong);border-bottom:1px solid var(--rule-strong)}
table{border-collapse:collapse;width:100%;font-size:.94rem}
th,td{text-align:left;padding:.7rem .8rem;border-bottom:1px solid var(--rule);vertical-align:top}
th{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:400}
tr:last-child td{border-bottom:none}

/* ---------- stats, tiles, steps ---------- */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:1.75rem;margin:1.5rem 0}
@media(max-width:700px){.stat-row{grid-template-columns:1fr;gap:1.1rem}}
.stat{border-top:2px solid var(--rule-strong);padding-top:.75rem}
.stat strong{display:block;font-family:var(--font-display);font-size:2.1rem;line-height:1;letter-spacing:-.03em;margin-bottom:.35rem}
.stat span,.stat small{display:block;font-size:.82rem;color:var(--muted);line-height:1.4}
.tile{border:1px solid var(--rule);padding:1.4rem;background:var(--paper)}
.tile h3{margin-top:0}
[class*="grid-"]{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:800px){[class*="grid-"]{grid-template-columns:1fr}}
/* three-up is too narrow inside the article measure; two-up reads */
main.article .grid-3{grid-template-columns:repeat(2,1fr)}
@media(max-width:700px){main.article .grid-3{grid-template-columns:1fr}}
.steps{list-style:none;padding:0;counter-reset:step}
.steps>li{counter-increment:step;position:relative;padding-left:3rem;margin-bottom:1.5rem}
.steps>li::before{
  content:counter(step,decimal-leading-zero); position:absolute; left:0; top:.1rem;
  font-family:var(--font-mono); font-size:.8rem; color:var(--gold);
  border-top:2px solid var(--gold-flat); padding-top:.3rem; width:2rem;
}

/* ---------- author ---------- */
.author-box{display:flex;gap:1rem;align-items:flex-start;border-top:2px solid var(--rule-strong);margin-top:3rem;padding-top:1.25rem}
.avatar{
  flex:0 0 46px;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:var(--paper);display:grid;place-items:center;
  font-family:var(--font-mono);font-size:.8rem;letter-spacing:.04em;
}
.author-box p{margin:0 0 .3rem;font-size:.94rem;color:var(--ink-2)}

/* ---------- buttons ---------- */
.btn{
  display:inline-block; padding:.78rem 1.5rem; text-decoration:none;
  font-family:var(--font-mono); font-size:.74rem; letter-spacing:.1em;
  text-transform:uppercase; border:1px solid var(--rule-strong); border-radius:var(--radius);
  transition:background .18s ease,color .18s ease;
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.btn-secondary,.btn-wa{background:transparent;color:var(--ink)}
.btn-secondary:hover,.btn-wa:hover{background:var(--ink);color:var(--paper)}
.cta-row{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.5rem}

/* ---------- cta band ---------- */
.cta-band{background:var(--paper-2);border-top:1px solid var(--rule-strong);border-bottom:1px solid var(--rule-strong);padding:3.25rem 0}
.cta-band h2{margin:0 0 .75rem;border-top:none;padding-top:0;max-width:20ch}
.cta-band p{max-width:60ch;color:var(--ink-2);margin:0}

/* ---------- related ---------- */
.related{padding:3rem 0}
.related ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1.75rem}
@media(max-width:850px){.related ul{grid-template-columns:1fr}}
.related li a{
  display:block;text-decoration:none;border-top:2px solid var(--rule-strong);padding-top:.85rem;
  font-family:var(--font-display);font-weight:600;font-size:1.1rem;line-height:1.25;letter-spacing:-.01em;
}
.related li a:hover{color:var(--accent)}
.related li a small{display:block;font-family:var(--font-body);font-weight:400;font-size:.88rem;color:var(--muted);margin-top:.4rem;line-height:1.45}
main.article .related{padding:1.5rem 0 0}
main.article .related .wrap{padding:0;max-width:none}
main.article .related ul{grid-template-columns:1fr;gap:0}
main.article .related li a{border-top:1px solid var(--rule);padding:1rem 0}

/* ---------- footer ---------- */
.site-footer{border-top:2px solid var(--rule-strong);padding:2.75rem 0 3.5rem;font-size:.9rem;color:var(--ink-2)}
.site-footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2.5rem}
@media(max-width:800px){.site-footer .cols{grid-template-columns:1fr;gap:1.75rem}}
.site-footer strong{font-family:var(--font-display);font-size:1.05rem;display:block;margin-bottom:.6rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:.4rem}
.site-footer a{text-decoration:none;color:var(--ink-2)}
.site-footer a:hover{color:var(--accent);text-decoration:underline}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}