:root{
  --bg:#0d0e0e;
  --surface:#17191a;
  --surface2:#1f2224;
  --line:#2b2f31;
  --line2:#35373a;
  --tx:#ffffff;
  --dim:#9ba1a6;
  --green:#59ed90;
  --green2:#31c46c;
  --greenDark:#08260f;
  --bad:#ff7a6b;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--tx);
  font:16px/1.65 Montserrat,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
.wrap{max-width:940px;margin:0 auto;padding:0 20px}

/* ---------- sticky header with CTA ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(13,14,14,.92);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
header.scrolled{box-shadow:0 6px 26px rgba(0,0,0,.55)}
.hd{display:flex;align-items:center;gap:14px;padding:12px 0}
.logo{font-weight:800;font-size:19px;letter-spacing:-.4px;white-space:nowrap;
  color:var(--tx);text-decoration:none}
.logo span{color:var(--green)}
nav{display:flex;gap:20px;margin-left:auto}
nav a{color:var(--dim);text-decoration:none;font-size:13.5px;font-weight:500;letter-spacing:.2px}
nav a:hover,nav a.on{color:var(--green)}
.hcta{margin-left:auto;background:linear-gradient(135deg,var(--green),var(--green2));
  color:var(--greenDark);text-decoration:none;font-weight:700;font-size:13.5px;
  padding:10px 18px;border-radius:9px;white-space:nowrap;transition:transform .15s,filter .15s}
.hcta:hover{filter:brightness(1.08);transform:translateY(-1px)}
nav + .hcta{margin-left:20px}
@media(max-width:900px){nav{display:none}.hcta{margin-left:auto}}
@media(max-width:420px){.hcta{padding:9px 13px;font-size:12.5px}.logo{font-size:16px}}

/* ---------- disclosure ---------- */
.disc{background:#141a16;border-bottom:1px solid #24352a;color:#a9c3b3;font-size:13.5px;padding:11px 0}
.disc strong{color:var(--green)}

/* ---------- hero ---------- */
.hero{background:linear-gradient(135deg,var(--green) 0%,var(--green2) 55%,#1d9b56 100%);
  border-radius:20px;padding:38px 34px;margin:26px 0 8px;color:var(--greenDark)}
.hero .tag{display:inline-block;background:rgba(8,38,15,.16);border:1px solid rgba(8,38,15,.25);
  border-radius:99px;padding:4px 13px;font-size:12px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase}
h1{font-size:36px;line-height:1.18;margin:14px 0 12px;letter-spacing:-.8px;font-weight:800;text-transform:uppercase}
.hero p{margin:0;font-size:16.5px;font-weight:500;max-width:640px;opacity:.86}
@media(max-width:640px){.hero{padding:26px 20px}h1{font-size:26px}}

/* article header variant (no green block) */
.ahead{margin:30px 0 10px}
.ahead h1{text-transform:none;font-size:33px;letter-spacing:-.6px;margin:10px 0 12px}
.ahead .lead{color:var(--dim);font-size:17px;margin:0}
.crumb{font-size:13px;color:var(--dim)}
.crumb a{color:var(--green);text-decoration:none}
.meta{color:var(--dim);font-size:13px;margin-top:12px;border-top:1px solid var(--line);padding-top:12px}
@media(max-width:640px){.ahead h1{font-size:25px}}

h2{font-size:25px;margin:44px 0 14px;letter-spacing:-.4px;font-weight:800;text-transform:uppercase;
  padding-left:14px;border-left:4px solid var(--green)}
h3{font-size:17px;margin:26px 0 8px;font-weight:700}
p{margin:0 0 14px}
a{color:var(--green)}

/* ---------- stat cards ---------- */
.vgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:14px;margin:20px 0}
.vitem{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px}
.vitem b{display:block;font-size:24px;font-weight:800;color:var(--green);margin-bottom:2px}
.vitem small{color:var(--dim);font-size:12.5px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px;margin:22px 0}
.card h3{margin-top:0}

table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px;display:block;overflow-x:auto}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
th{background:var(--surface2);font-weight:700;color:var(--green);font-size:13px;
  text-transform:uppercase;letter-spacing:.5px}
tbody tr:nth-child(even){background:#131516}
.win{color:var(--green);font-weight:700}

.cols{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:18px 0}
@media(max-width:660px){.cols{grid-template-columns:1fr}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px}
.box h3{margin-top:0;text-transform:uppercase;font-size:14px;letter-spacing:.8px}
ul{margin:0 0 14px;padding-left:20px}
li{margin-bottom:8px}
.pro li::marker{color:var(--green)}
.con li::marker{color:var(--bad)}

ol.steps{padding-left:20px}
ol.steps li{margin-bottom:12px}
ol.steps li::marker{color:var(--green);font-weight:700}

.note{background:#141a16;border:1px solid #24352a;border-left:4px solid var(--green);
  border-radius:10px;padding:15px 18px;margin:20px 0;font-size:14.5px;color:#c4d3ca}
.warn{background:#1c1614;border:1px solid #3a2622;border-left:4px solid var(--bad);
  border-radius:10px;padding:15px 18px;margin:20px 0;font-size:14.5px;color:#d9c2bd}

.ctarow{text-align:center;margin:38px 0 8px}
.cta{display:inline-block;background:linear-gradient(135deg,var(--green),var(--green2));
  color:var(--greenDark);text-decoration:none;font-weight:800;font-size:15.5px;
  padding:15px 34px;border-radius:11px;letter-spacing:.2px;
  box-shadow:0 8px 26px rgba(89,237,144,.18);transition:transform .15s,filter .15s}
.cta:hover{filter:brightness(1.08);transform:translateY(-2px)}
.ctanote{color:var(--dim);font-size:13px;margin-top:11px;text-align:center}

details{background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:15px 17px;margin-bottom:10px}
details[open]{border-color:var(--line2)}
summary{cursor:pointer;font-weight:600;list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";color:var(--green);font-weight:800;margin-right:10px}
details[open] summary::before{content:"–"}
details p{margin:12px 0 0;color:var(--dim);font-size:14.5px}

/* related posts */
.rel{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0}
.rel a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:17px;text-decoration:none;color:var(--tx);transition:border-color .15s,transform .15s}
.rel a:hover{border-color:var(--green);transform:translateY(-2px)}
.rel b{display:block;font-size:15px;margin-bottom:5px}
.rel small{color:var(--dim);font-size:13px;line-height:1.5;display:block}

footer{border-top:1px solid var(--line);margin-top:52px;padding:30px 0 46px;color:var(--dim);font-size:13.5px}
footer strong{color:#c7cdd2}
footer a{color:var(--green)}
.small{font-size:13px;color:var(--dim)}