/* SteadyGround — design system */
:root{
  --bg:#0f1512; --surface:#152019; --surface-2:#1b2a21; --line:#27392e;
  --fg:#eef3ef; --muted:#9db0a5; --accent:#5fd39a; --accent-2:#c9a227;
  --radius:14px; --wrap:1120px;
  --font-head:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --font-body:ui-sans-serif,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.muted{color:var(--muted)}
.small{font-size:.87rem}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:600;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(2.2rem,5.5vw,3.6rem);letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,3vw,2rem)}
h3{font-size:1.15rem}
em{font-style:italic;color:var(--accent)}
.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:.72rem;color:var(--accent);margin:0 0 .9rem}
.lead{font-size:1.1rem;color:var(--muted);max-width:62ch}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,21,18,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:66px;gap:16px}
.brand{font-family:var(--font-head);font-size:1.15rem;display:inline-flex;align-items:center;gap:.55rem}
.brand em{color:var(--accent);font-style:normal}
.mark{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:inline-block}
.nav{display:flex;gap:26px}
.nav a{font-size:.92rem;color:var(--muted);padding:6px 0;border-bottom:1px solid transparent}
.nav a:hover,.nav a.active{color:var(--fg);border-color:var(--accent)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{width:22px;height:2px;background:var(--fg);display:block;transition:.25s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{padding:clamp(64px,10vw,130px) 0 clamp(48px,7vw,90px);background:
  radial-gradient(900px 420px at 12% -10%,rgba(95,211,154,.16),transparent 60%),
  radial-gradient(700px 380px at 90% 0%,rgba(201,162,39,.10),transparent 60%)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-block;background:var(--accent);color:#08120d;font-weight:600;padding:12px 22px;border-radius:999px;border:1px solid var(--accent);font-size:.95rem;cursor:pointer;transition:.2s}
.btn:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--accent)}
.stats{display:flex;gap:44px;flex-wrap:wrap;margin-top:52px;padding-top:26px;border-top:1px solid var(--line)}
.stats strong{display:block;font-family:var(--font-head);font-size:1.9rem}
.stats span{color:var(--muted);font-size:.85rem}

/* sections */
.section{padding:clamp(48px,7vw,88px) 0}
.section.alt{background:var(--surface)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{margin:0}
.link{color:var(--accent);font-size:.9rem}
.grid{display:grid;gap:18px}
.cards{grid-template-columns:repeat(3,1fr)}
.three{grid-template-columns:repeat(3,1fr)}
.card{display:flex;flex-direction:column;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;height:100%;transition:.22s}
.card:hover{transform:translateY(-3px);border-color:var(--accent);background:var(--surface-2)}
.card h3{margin:0}
.card p{margin:0;font-size:.94rem}
.tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.14em;color:var(--accent)}
.read{margin-top:auto;padding-top:12px;font-size:.85rem;color:var(--muted)}
.two-col{display:grid;grid-template-columns:1.4fr 1fr;gap:44px;align-items:start}
.checklist{list-style:none;margin:0;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.checklist li{padding:12px 0;border-bottom:1px solid var(--line);font-size:.94rem;color:var(--muted)}
.checklist li:last-child{border:0}
.checklist strong{display:block;color:var(--fg);font-weight:600}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.panel p{margin:0;color:var(--muted);font-size:.94rem}
.band{background:linear-gradient(135deg,var(--surface-2),var(--surface));border:1px solid var(--line);border-radius:var(--radius);padding:clamp(28px,5vw,52px);text-align:center}
.band p{max-width:62ch;margin:0 auto 22px;color:var(--muted)}
.mt{margin-top:26px}

/* page head */
.page-head{padding:clamp(48px,7vw,86px) 0 10px;background:radial-gradient(700px 340px at 10% 0%,rgba(95,211,154,.13),transparent 60%)}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{background:transparent;border:1px solid var(--line);color:var(--muted);padding:7px 15px;border-radius:999px;font-size:.85rem;cursor:pointer;font-family:inherit;transition:.2s}
.chip:hover{color:var(--fg)}
.chip.active{background:var(--accent);color:#08120d;border-color:var(--accent)}

/* article */
.article-head{padding:clamp(48px,7vw,80px) 22px 8px;max-width:820px}
.article-head .eyebrow a{color:var(--accent)}
.article-body{display:grid;grid-template-columns:220px 1fr;gap:48px;padding-top:34px;padding-bottom:20px;align-items:start}
.toc{position:sticky;top:90px;border-left:1px solid var(--line);padding-left:16px}
.toc h4{margin:0 0 10px;font-size:.8rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);font-family:var(--font-body)}
.toc a{display:block;font-size:.87rem;color:var(--muted);padding:5px 0}
.toc a:hover,.toc a.active{color:var(--accent)}
.prose{max-width:70ch}
.prose h2{margin-top:2em;scroll-margin-top:90px}
.prose p{color:#d5e0d9}
.callout{margin-top:36px;background:var(--surface);border-left:3px solid var(--accent-2);border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;color:var(--muted);font-size:.94rem}

/* form */
.form{display:flex;flex-direction:column;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.form label{display:flex;flex-direction:column;gap:7px;font-size:.85rem;color:var(--muted)}
.form input,.form textarea,.form select{background:var(--bg);border:1px solid var(--line);color:var(--fg);border-radius:10px;padding:12px 14px;font:inherit;font-size:.95rem}
.form input:focus,.form textarea:focus,.form select:focus{outline:none;border-color:var(--accent)}
.form .btn{align-self:flex-start}
.form-status{margin:0;font-size:.88rem;color:var(--accent);min-height:1.2em}
.form-status.error{color:#e98b7a}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--surface);padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px}
.footer-grid h4{font-family:var(--font-body);font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-bottom:14px}
.footer-grid a{display:block;font-size:.92rem;color:var(--muted);padding:4px 0}
.footer-grid a:hover{color:var(--accent)}
.footer-grid .brand{margin-bottom:12px}
.copyright{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-top:40px;padding-top:20px;border-top:1px solid var(--line)}

.reveal{opacity:0;transform:translateY(14px)}
.reveal.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s ease}

@media(max-width:900px){
  .cards,.three{grid-template-columns:repeat(2,1fr)}
  .two-col{grid-template-columns:1fr;gap:28px}
  .article-body{grid-template-columns:1fr}
  .toc{position:static;display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .cards,.three{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle{display:flex}
  .nav{position:absolute;top:66px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:8px 22px 18px;display:none}
  .nav.open{display:flex}
  .nav a{padding:11px 0;border-bottom:1px solid var(--line)}
  .stats{gap:28px}
}