/* Shared by every page under /guides/. Tokens mirror index.html; keep them in step. */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --teal:#2B7A5C;--teal-dark:#1f5c43;--teal-light:#EEF7F2;--teal-mid:#c4dfd0;--charcoal:#1C1F1E;--teal-bright:#3DA57A;--mint:#7ecfab;--teal-text:#1a4f3a;
  --bg:#FAFAF8;--bg2:#F3F5F3;--ink:#111827;--ink2:#4B5563;--ink3:#9CA3AF;--white:#fff;--bdr:#E5E7EB;
  --r:10px;--rl:16px;
  --shadow-xs:0 1px 2px rgba(0,0,0,.04);
  --shadow-sm:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 4px 14px rgba(0,0,0,.08),0 2px 4px rgba(0,0,0,.04);
  --ease:.18s cubic-bezier(.4,0,.2,1);
}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',sans-serif;font-size:15px;line-height:1.65;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--teal-dark)}
a,button{-webkit-tap-highlight-color:transparent}

/* NAV (same shape as the home page) */
body>nav{position:sticky;top:0;z-index:200;background:rgba(250,250,248,.97);backdrop-filter:blur(12px);border-bottom:1px solid var(--bdr);padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:62px}
.logo{display:inline-block;font-size:1.35rem;font-weight:800;color:var(--ink);text-decoration:none;letter-spacing:-.04em}
.logo-t span{background:linear-gradient(92deg,var(--teal-bright) 0%,var(--teal) 60%,var(--teal-dark) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:1.75rem;align-items:center}
.nav-links a{color:var(--ink3);text-decoration:none;font-size:.85rem;font-weight:500;transition:color var(--ease)}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--ink)}
.nav-cta{background:var(--teal)!important;color:var(--white)!important;padding:.48rem 1.15rem;border-radius:var(--r);font-weight:700!important;font-size:.83rem!important;box-shadow:0 2px 8px rgba(43,122,92,.28);transition:background var(--ease),box-shadow var(--ease),transform var(--ease)}
.nav-cta:hover{background:var(--teal-dark)!important;transform:translateY(-1px)}

/* PAGE FRAME */
main{flex:1}
.g{max-width:760px;margin:0 auto;padding:3.5rem 2rem 4.5rem}
.crumbs{display:flex;gap:.5rem;align-items:center;font-size:.78rem;color:var(--ink3);margin-bottom:1.6rem}
.crumbs a{color:var(--ink3);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs span[aria-hidden]{opacity:.6}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--teal-text);background:var(--teal-light);border:1px solid var(--teal-mid);padding:.3rem .85rem;border-radius:20px;margin-bottom:1.2rem}
.eyebrow i{font-style:normal;font-weight:500;letter-spacing:0;text-transform:none;color:var(--ink2)}
h1{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;letter-spacing:-.035em;line-height:1.12;margin-bottom:1rem}
.dek{font-size:1.05rem;color:var(--ink2);line-height:1.7;margin-bottom:2.25rem;max-width:620px}
.meta{display:flex;flex-wrap:wrap;gap:.4rem 1.25rem;font-size:.78rem;color:var(--ink3);padding-bottom:1.75rem;border-bottom:1px solid var(--bdr);margin-bottom:2.25rem}
.meta b{font-weight:600;color:var(--ink2)}

/* ARTICLE BODY */
.body>*+*{margin-top:1.15rem}
.body h2{font-size:1.45rem;font-weight:800;letter-spacing:-.025em;line-height:1.2;margin-top:2.75rem;margin-bottom:.25rem}
.body h3{font-size:1.05rem;font-weight:700;margin-top:1.9rem;margin-bottom:.1rem}
.body p,.body li{color:var(--ink2);font-size:.97rem;line-height:1.78}
.body strong{color:var(--ink);font-weight:700}
.body ul,.body ol{padding-left:1.35rem}
.body li+li{margin-top:.4rem}
.body li::marker{color:var(--teal)}
.key{background:var(--white);border:1.5px solid var(--bdr);border-left:3.5px solid var(--teal);border-radius:var(--rl);padding:1.35rem 1.6rem;box-shadow:var(--shadow-sm)}
.key h2{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);margin:0 0 .7rem}
.key ul{padding-left:1.15rem}
.key li{font-size:.92rem;line-height:1.6}
.callout{background:var(--teal-light);border:1.5px solid var(--teal-mid);border-radius:var(--rl);padding:1.2rem 1.5rem;color:var(--teal-text)}
.callout p{color:var(--teal-text);font-size:.92rem}
.callout b{display:block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.35rem}
.math{font-variant-numeric:tabular-nums;background:var(--bg2);border:1px solid var(--bdr);border-radius:var(--r);padding:1rem 1.25rem;font-size:.92rem;color:var(--ink);line-height:1.8}
.math span{color:var(--ink3)}

/* TABLES: scroll sideways on narrow screens rather than squash */
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1.5px solid var(--bdr);border-radius:var(--rl);background:var(--white);box-shadow:var(--shadow-xs)}
table{width:100%;border-collapse:collapse;font-size:.86rem;min-width:600px}
@media(min-width:1000px){.tbl{margin-left:-5rem;margin-right:-5rem}}
th,td{padding:.75rem .95rem;text-align:left;vertical-align:top;border-bottom:1px solid var(--bdr);line-height:1.5}
th{font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink3);background:var(--bg2)}
tbody tr:last-child td{border-bottom:0}
td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
tr.us td{background:var(--teal-light)}
tr.us td:first-child{color:var(--teal-text)}
.tnote{font-size:.76rem;color:var(--ink3);line-height:1.55;margin-top:.6rem}
.yes{color:var(--teal-dark);font-weight:700}
.no{color:var(--ink3)}

/* SOURCES */
.sources{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--bdr)}
.sources h2{font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);margin-bottom:.75rem}
.sources ol{padding-left:1.25rem}
.sources li{font-size:.8rem;color:var(--ink2);line-height:1.6}
.sources li+li{margin-top:.3rem}
.sources a{word-break:break-word}

/* CTA BOX */
.gcta{margin-top:3rem;background:linear-gradient(145deg,var(--teal) 0%,var(--teal-dark) 100%);color:var(--white);border-radius:var(--rl);padding:2rem 2.1rem;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;box-shadow:var(--shadow-md)}
.gcta h2{font-size:1.25rem;font-weight:800;letter-spacing:-.02em;line-height:1.25;margin-bottom:.35rem}
.gcta p{font-size:.9rem;color:rgba(255,255,255,.78);max-width:420px}
.gcta-btns{display:flex;gap:.6rem;flex-wrap:wrap}
.btn-w{display:inline-block;background:var(--white);color:var(--teal-dark);font-weight:700;font-size:.9rem;padding:.8rem 1.4rem;border-radius:var(--r);text-decoration:none;transition:transform var(--ease),box-shadow var(--ease)}
.btn-w:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(0,0,0,.18)}
.btn-ow{display:inline-block;background:rgba(255,255,255,.1);color:var(--white);border:1.5px solid rgba(255,255,255,.35);font-weight:600;font-size:.9rem;padding:.8rem 1.4rem;border-radius:var(--r);text-decoration:none;transition:background var(--ease)}
.btn-ow:hover{background:rgba(255,255,255,.18)}

/* INDEX CARDS */
.glist{display:grid;gap:1rem;margin-top:2rem}
.gcard{display:block;background:var(--white);border:1.5px solid var(--bdr);border-radius:var(--rl);padding:1.5rem 1.7rem;text-decoration:none;color:inherit;box-shadow:var(--shadow-sm);transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease)}
.gcard:hover{border-color:var(--teal-mid);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.gcard h2{font-size:1.15rem;font-weight:800;letter-spacing:-.02em;line-height:1.3;margin-bottom:.4rem;color:var(--ink)}
.gcard p{font-size:.9rem;color:var(--ink2);line-height:1.65}
.gcard .gm{display:block;font-size:.74rem;color:var(--ink3);margin-top:.75rem}

/* FOOTER */
footer{background:#0d1812;padding:2.25rem 2.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.flogo{display:inline-block;font-size:1.1rem;font-weight:800;color:rgba(255,255,255,.55);text-decoration:none;letter-spacing:-.03em;flex:1}
.flogo .logo-t span{background:linear-gradient(92deg,#b7f0d3,var(--mint));-webkit-background-clip:text;background-clip:text;color:transparent}
.fcopy{font-size:.78rem;color:rgba(255,255,255,.2)}
.flinks{display:flex;gap:1.75rem;flex:1;justify-content:flex-end}
.flinks a{font-size:.78rem;color:rgba(255,255,255,.3);text-decoration:none;transition:color var(--ease)}
.flinks a:hover{color:rgba(255,255,255,.7)}

@media(max-width:900px){
  .nav-links a:not(.nav-cta){display:none}
  footer{flex-direction:column;text-align:center;padding:1.75rem 1.5rem}
  .flogo,.flinks{flex:none}
  .flinks{justify-content:center}
}
@media(max-width:640px){
  body>nav{padding:0 1.25rem;height:56px}
  .logo{font-size:1.2rem}
  .g{padding:2.5rem 1.25rem 3.5rem}
  .dek{font-size:.98rem}
  .gcta{padding:1.6rem 1.4rem}
  .gcta-btns{width:100%;flex-direction:column}
  .btn-w,.btn-ow{text-align:center}
  .key,.callout{padding:1.1rem 1.2rem}
  footer{padding:1.5rem 1.25rem}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:.01ms!important}}