/* Guides stylesheet — handoff design language */
@import url("https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;520;540;560;600&family=JetBrains+Mono:wght@400;500;600&family=Instrument+Serif:ital@0;1&display=swap");

:root{
  --accent:#2f7d5b;
  --accent-tint: color-mix(in oklab, var(--accent) 12%, transparent);
  --accent-tint-2: color-mix(in oklab, var(--accent) 6%, transparent);
  --bg:#f7f4ee;
  --bg-2:#fbfaf6;
  --ink:#161513;
  --ink-2:#2d2a25;
  --ink-3:#5b564d;
  --ink-4:#8a847a;
  --rule: color-mix(in oklab, var(--ink) 10%, transparent);
  --rule-2: color-mix(in oklab, var(--ink) 6%, transparent);
  --card:#ffffff;
  --radius:10px;
  --radius-sm:8px;
  --radius-lg:14px;

  /* legacy aliases so existing class names stay visually consistent */
  --brand: var(--accent);
  --brand-ink: var(--ink);
  --text: var(--ink);
  --muted: var(--ink-3);
  --line: var(--rule);
  --panel: var(--card);
  --ring: color-mix(in oklab, var(--accent) 18%, transparent);
  --shadow: 0 8px 28px -18px rgba(0,0,0,.25);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Inter Tight", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  font-feature-settings:"ss01","cv11";
  background-image:
    radial-gradient(1200px 600px at 85% -10%, var(--accent-tint) 0%, transparent 60%),
    radial-gradient(1000px 500px at 10% 90%, var(--accent-tint-2) 0%, transparent 55%);
  background-attachment: fixed;
}
a{color:inherit;text-decoration:none}
a.inline{color:var(--accent);text-decoration:none;border-bottom:1px solid color-mix(in oklab,var(--accent) 40%,transparent);padding-bottom:1px}
a.inline:hover{border-bottom-color:var(--accent)}
img{max-width:100%;display:block}

.container{max-width:840px;margin:0 auto;padding:clamp(20px,2vw,28px) clamp(20px,2vw,32px)}
.container-wide{max-width:1320px;margin:0 auto;padding:14px clamp(20px,2vw,32px)}

/* ─── header / nav ────────────────────────────────────────── */
header{
  position:sticky;top:0;z-index:50;
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border-bottom:1px solid var(--rule-2);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav-left{display:flex;align-items:center;gap:28px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:"Inter Tight",system-ui,sans-serif;
  font-weight:560;font-size:16px;letter-spacing:-.02em;
  color:var(--ink);
}
.brand .muted{color:var(--ink-4);opacity:.7;font-weight:500}
.brand::before{
  content:"";display:inline-block;width:22px;height:22px;border-radius:5px;
  background:
    linear-gradient(135deg, transparent 0 48%, var(--accent) 48% 100%),
    color-mix(in oklab, var(--ink) 10%, transparent);
  border:1.6px solid var(--ink);
  margin-right:2px;
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  font-size:14px;font-weight:480;color:var(--ink-2);
  padding:8px 12px;border-radius:6px;
}
.nav-links a:hover{
  background: color-mix(in oklab, var(--ink) 5%, transparent);
  color:var(--ink);
}

/* buttons */
.btn,.cta{
  appearance:none;display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:calc(var(--radius) - 2px);
  font-family:inherit;font-size:14px;font-weight:520;letter-spacing:-.005em;
  border:1px solid var(--rule);background:var(--card);color:var(--ink);
  cursor:pointer;white-space:nowrap;
  transition: transform .08s ease, background .15s, border-color .15s, color .15s;
  text-decoration:none;
}
.btn:hover{background:var(--bg-2);border-color: color-mix(in oklab, var(--ink) 22%, transparent)}
.btn:active,.cta:active{transform:translateY(1px)}
.cta{
  background:var(--ink);color:var(--bg-2);border-color:var(--ink);
  box-shadow:0 8px 24px -18px rgba(0,0,0,.45);
}
.cta:hover{background: color-mix(in oklab, var(--ink) 88%, var(--accent));box-shadow:0 10px 28px -16px color-mix(in oklab, var(--ink) 70%, transparent)}

/* ─── type ────────────────────────────────────────────────── */
main{padding-block:clamp(24px,4vw,44px)}
article{max-width:760px;margin:0 auto}

h1{
  font-family:"Inter Tight",system-ui,sans-serif;
  font-weight:520;font-size:clamp(30px,4.4vw,54px);
  line-height:1.04;letter-spacing:-.032em;
  margin:0 0 16px;text-wrap:balance;
}
h1 em{
  font-style:italic;font-family:"Instrument Serif","EB Garamond",Georgia,serif;
  font-weight:400;color:var(--accent);letter-spacing:-.02em;
}
h2{
  font-family:"Inter Tight",system-ui,sans-serif;
  font-weight:520;font-size:clamp(22px,2.5vw,30px);
  line-height:1.15;letter-spacing:-.025em;
  margin:44px 0 12px;text-wrap:balance;
}
h3{
  font-family:"Inter Tight",system-ui,sans-serif;
  font-weight:540;font-size:18px;line-height:1.3;letter-spacing:-.015em;
  margin:22px 0 6px;
}
p{margin:0 0 14px;color:var(--ink-2);font-size:16px;line-height:1.65}
article p{max-width:68ch}
.sub{
  font-size:clamp(16px,1.9vw,19px);
  color:var(--ink-3);margin:0 0 26px;max-width:62ch;text-wrap:pretty;
}
.muted{color:var(--ink-4)}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:11px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);
  margin:0 0 10px;
}
.kicker::before{
  content:"";display:inline-block;width:6px;height:6px;border-radius:999px;
  background:var(--accent);
  box-shadow:0 0 0 3px color-mix(in oklab, var(--accent) 18%, transparent);
}

/* ─── panel, lead cta, crumbs ─────────────────────────────── */
.panel{
  background:var(--card);border:1px solid var(--rule);
  border-radius:var(--radius);
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset, 0 8px 28px -20px rgba(0,0,0,.2);
  padding:22px 24px;
}
.panel h3{margin-top:0}

.lead-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:0 0 28px}
.lead-cta .muted{
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-4);
}

.crumbs{
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-4);margin:0 0 22px;
}
.crumbs a{color:var(--ink-4);text-decoration:none;border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--accent);border-bottom-color: color-mix(in oklab, var(--accent) 40%, transparent)}

/* ─── step list ──────────────────────────────────────────── */
ol.steps,ul.checks{padding-left:0;list-style:none;display:grid;gap:10px;margin:18px 0}
ol.steps{counter-reset:step}
ol.steps li{
  counter-increment:step;position:relative;
  padding:16px 18px 16px 62px;
  border:1px solid var(--rule-2);
  border-radius:calc(var(--radius) - 2px);
  background:var(--bg-2);
  color:var(--ink-2);
  font-size:15.5px;line-height:1.6;
}
ol.steps li::before{
  content: counter(step, decimal-leading-zero);
  position:absolute;left:18px;top:16px;
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:15px;font-weight:500;letter-spacing:-.02em;
  color:var(--accent);
  width:auto;height:auto;background:transparent;border-radius:0;
  display:inline-block;
}
ol.steps li strong{color:var(--ink);font-weight:560}

ul.checks li{
  padding:14px 16px 14px 40px;
  border:1px solid var(--rule-2);border-radius:calc(var(--radius) - 2px);
  background:var(--card);position:relative;
  font-size:15.5px;line-height:1.55;color:var(--ink-2);
}
ul.checks li::before{
  content:"";position:absolute;left:16px;top:22px;
  width:12px;height:1px;background:var(--accent);
}

/* ─── faq ────────────────────────────────────────────────── */
details.faq{
  border:1px solid var(--rule-2);
  border-radius:calc(var(--radius) - 2px);
  padding:14px 18px;background:var(--card);margin:8px 0;
  transition:border-color .15s;
}
details.faq:hover{border-color:var(--rule)}
details.faq[open]{border-color:var(--rule)}
details.faq summary{
  cursor:pointer;font-weight:540;font-size:16.5px;letter-spacing:-.01em;
  color:var(--ink);list-style:none;display:flex;align-items:center;gap:12px;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"+";margin-left:auto;color:var(--accent);
  font-size:22px;font-weight:300;line-height:1;
  transition: transform .15s;
}
details.faq[open] summary::after{content:"−"}
details.faq[open] summary{margin-bottom:10px}
details.faq p{margin:0;color:var(--ink-3);font-size:15.5px}

/* ─── cards grid ─────────────────────────────────────────── */
.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
@media (max-width:800px){.grid-2,.grid-3{grid-template-columns:1fr}}

.card{
  padding:22px 24px;border-radius:var(--radius);
  border:1px solid var(--rule);background:var(--card);display:block;
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset, 0 8px 28px -22px rgba(0,0,0,.18);
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.card:hover{
  border-color: color-mix(in oklab, var(--accent) 35%, var(--rule));
  transform:translateY(-1px);
  box-shadow:0 1px 0 rgba(255,255,255,.8) inset, 0 16px 36px -22px rgba(0,0,0,.22);
}
.card h3{margin:0 0 8px;font-size:17.5px}
.card p{margin:0;color:var(--ink-3);font-size:14.5px;line-height:1.55;max-width:none}
.card::after{
  content:"→";display:inline-block;margin-top:12px;
  color:var(--accent);font-size:16px;font-weight:500;
  transition: transform .15s;
}
.card:hover::after{transform:translateX(3px)}

/* ─── related ────────────────────────────────────────────── */
.related{margin-top:56px;padding-top:32px;border-top:1px solid var(--rule-2)}
.related h2{margin-top:0}

/* ─── footer ─────────────────────────────────────────────── */
footer{
  border-top:1px solid var(--rule-2);
  background: transparent;
  margin-top:64px;
}
.footer{
  display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;
  padding:28px 0 24px;
}
.footer .muted{
  font-family:"JetBrains Mono",ui-monospace,monospace;
  font-size:10.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);
}
.footer nav{display:flex;gap:18px;flex-wrap:wrap}
.footer nav a{color:var(--ink-2);font-size:14px}
.footer nav a:hover{color:var(--accent)}

/* ─── mobile nav ─────────────────────────────────────────── */
.hamburger{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:8px;
  border:1px solid var(--rule);background:var(--card);cursor:pointer;
  color:var(--ink);
}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

.mobile-nav{display:none}
@media (max-width:900px){
  header .nav-left nav.nav-links{display:none}
  header > .container-wide > .nav-links{display:none}
  .hamburger{display:inline-flex}
  .mobile-nav{
    position:absolute;top:64px;right:16px;left:16px;
    display:none;flex-direction:column;gap:4px;
    border:1px solid var(--rule);background:var(--card);
    border-radius:12px;box-shadow: 0 20px 40px -20px rgba(0,0,0,.25);
    padding:10px;z-index:60;
  }
  .mobile-nav a{
    padding:10px 12px;border-radius:8px;font-size:14.5px;color:var(--ink);
    background:transparent;border:none;
  }
  .mobile-nav a:hover{background:var(--bg-2)}
  .mobile-nav .cta{
    margin-top:6px;justify-content:center;text-align:center;
    background:var(--ink);color:var(--bg-2);border-color:var(--ink);
  }
  .mobile-nav.open{display:flex}
}

@media (max-width:640px){
  .container{padding:16px 20px}
  .container-wide{padding:12px 20px}
  h1{font-size:clamp(28px,7vw,40px)}
  h2{font-size:22px;margin:32px 0 10px}
  .panel,.card{padding:18px}
  .footer{grid-template-columns:1fr;gap:12px}
}