:root{
  --bg:#07111f;--card:#0d1b2e;--soft:#11243c;--text:#eef5ff;--muted:#9db0c7;
  --accent:#55d6a9;--accent2:#68a7ff;--line:#223653;--danger:#ff8f8f;
  --max:1180px;--radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#07111f 0%,#09182b 100%);color:var(--text);line-height:1.6}
a{color:inherit}
.container{width:min(var(--max),calc(100% - 32px));margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(7,17,31,.88);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}
.brand{font-weight:800;text-decoration:none;letter-spacing:-.03em}
.brand span{color:var(--accent)}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:.95rem}
nav a:hover{color:var(--text)}
.hero{padding:76px 0 42px}
.badge{display:inline-flex;padding:7px 11px;border:1px solid var(--line);border-radius:999px;color:var(--accent);background:rgba(85,214,169,.06);font-size:.84rem}
h1{font-size:clamp(2.6rem,7vw,5.4rem);line-height:.98;margin:18px 0 20px;letter-spacing:-.055em;max-width:900px}
h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.1;letter-spacing:-.035em}
h3{letter-spacing:-.02em}
.lead{font-size:1.15rem;color:var(--muted);max-width:760px}
.cta{display:inline-block;margin-top:22px;background:var(--accent);color:#041510;text-decoration:none;font-weight:800;padding:13px 18px;border-radius:12px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:linear-gradient(180deg,rgba(17,36,60,.96),rgba(13,27,46,.96));border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 18px 50px rgba(0,0,0,.12)}
.card p{color:var(--muted)}
.tool-link{display:block;text-decoration:none;transition:.2s transform,.2s border-color}
.tool-link:hover{transform:translateY(-3px);border-color:#3f668f}
.section{padding:48px 0}
.kicker{color:var(--accent);font-size:.82rem;text-transform:uppercase;letter-spacing:.14em;font-weight:800}
.calc{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start}
label{display:block;font-size:.92rem;color:var(--muted);margin:14px 0 6px}
input,select{width:100%;padding:13px 14px;background:#071425;color:var(--text);border:1px solid var(--line);border-radius:11px;font:inherit}
button{border:0;border-radius:11px;padding:13px 16px;background:var(--accent);color:#041510;font-weight:800;cursor:pointer;margin-top:16px}
.result{font-size:1.6rem;font-weight:800;margin:6px 0}
.result small{font-size:.85rem;color:var(--muted);font-weight:500}
.stat{padding:14px 0;border-bottom:1px solid var(--line)}
.stat:last-child{border-bottom:0}
.muted{color:var(--muted)}
.note{border-left:3px solid var(--accent2);padding:12px 16px;background:rgba(104,167,255,.06);color:var(--muted);border-radius:0 10px 10px 0}
.breadcrumbs{font-size:.9rem;color:var(--muted);padding-top:28px}
.breadcrumbs a{color:var(--muted)}
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:700}
footer{border-top:1px solid var(--line);padding:36px 0;margin-top:48px;color:var(--muted);font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
footer a{color:var(--muted)}
@media(max-width:850px){.grid{grid-template-columns:1fr 1fr}.calc{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}nav{display:none}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.hero{padding-top:48px}h1{font-size:2.7rem}}

/* SEO content expansion */
.toc{background:rgba(104,167,255,.05);border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:24px 0}
.toc strong{display:block;margin-bottom:8px}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--text)}
.article{max-width:900px}
.article h2{margin-top:46px}
.article h3{margin-top:30px}
.article ul,.article ol{padding-left:22px}
.example{background:rgba(85,214,169,.06);border:1px solid rgba(85,214,169,.25);border-radius:14px;padding:18px;margin:22px 0}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#071425;border:1px solid var(--line);padding:14px 16px;border-radius:12px;overflow:auto}
.related{margin-top:46px}
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.seo-table{width:100%;border-collapse:collapse;margin:20px 0}
.seo-table th,.seo-table td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;vertical-align:top}
.seo-table th{color:var(--muted);font-size:.9rem}
.callout{background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:14px;padding:18px;margin:22px 0}
@media(max-width:650px){.mini-grid{grid-template-columns:1fr}.seo-table{font-size:.92rem}}

.coin-hero{display:grid;grid-template-columns:1.35fr .65fr;gap:24px;align-items:stretch}
.coin-facts{display:grid;gap:10px}
.fact{border:1px solid var(--line);border-radius:14px;padding:14px;background:rgba(255,255,255,.02)}
.intent-links{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.intent-links a{border:1px solid var(--line);border-radius:999px;padding:8px 12px;text-decoration:none;color:var(--muted)}
.intent-links a:hover{color:var(--text);border-color:#3f668f}
@media(max-width:850px){.coin-hero{grid-template-columns:1fr}}

/* Mobile burger menu */
.menu-toggle{display:none;appearance:none;border:1px solid var(--line);background:transparent;color:var(--text);width:44px;height:44px;border-radius:11px;padding:0;margin:0;align-items:center;justify-content:center;cursor:pointer}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{display:block;width:21px;height:2px;background:currentColor;border-radius:2px;position:relative;transition:.2s ease}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
.menu-toggle span::before{top:-7px}.menu-toggle span::after{top:7px}
.menu-toggle[aria-expanded="true"] span{background:transparent}
.menu-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.menu-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}
@media(max-width:850px){
  .nav{position:relative}.menu-toggle{display:inline-flex}
  header nav{display:none;position:absolute;top:calc(100% + 1px);left:0;right:0;margin:0;background:rgba(7,17,31,.98);border:1px solid var(--line);border-top:0;border-radius:0 0 16px 16px;padding:10px 16px 16px;box-shadow:0 18px 40px rgba(0,0,0,.28)}
  header nav.is-open{display:block}
  header nav a{display:block;margin:0;padding:12px 4px;border-bottom:1px solid var(--line)}
  header nav a:last-child{border-bottom:0}
}

/* Consent banner */
.cookie-banner{position:fixed;z-index:9999;left:16px;right:16px;bottom:16px;max-width:980px;margin:0 auto;background:#0d1b2e;color:var(--text);border:1px solid var(--line);border-radius:16px;box-shadow:0 22px 60px rgba(0,0,0,.38);padding:18px;display:none}
.cookie-banner.is-visible{display:block}.cookie-banner h2{font-size:1.15rem;margin:0 0 7px}.cookie-banner p{margin:0;color:var(--muted);font-size:.94rem}
.cookie-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.cookie-actions button{margin:0}
.cookie-actions .secondary{background:transparent;color:var(--text);border:1px solid var(--line)}
.cookie-actions .link-btn{background:transparent;color:var(--muted);padding-left:4px;padding-right:4px}
.cookie-settings{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);display:none}.cookie-settings.is-open{display:block}
.cookie-option{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:8px 0}
.cookie-option input[type="checkbox"]{width:auto;min-width:20px;height:20px}
.cookie-settings-link{background:none;border:0;padding:0;margin:0;color:var(--muted);text-decoration:underline;font:inherit;cursor:pointer}
@media(max-width:560px){
  .cookie-banner{left:10px;right:10px;bottom:10px;padding:16px}
  .cookie-actions{display:grid;grid-template-columns:1fr}
  .cookie-actions button{width:100%}
}

.tool-cta{font-weight:800;color:var(--text)}