/* ── Reset & Base ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:        #0a0e17;
  --bg-card:   #111827;
  --bg-card-2: #1a2234;
  --border:    #1e293b;
  --text:      #e2e8f0;
  --text-dim:  #94a3b8;
  --text-muted:#64748b;
  --accent:    #6366f1;
  --accent-2:  #818cf8;
  --green:     #22c55e;
  --green-dim: #16a34a;
  --red:       #ef4444;
  --amber:     #f59e0b;
  --cyan:      #06b6d4;
  --pink:      #ec4899;
  --radius:    12px;
  --radius-sm: 8px;
}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}
a{color:var(--accent-2);text-decoration:none;transition:color .2s}
a:hover{color:#a5b4fc}

/* ── Utility ── */
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.badge{
  display:inline-flex;align-items:center;gap:4px;
  font-size:.7rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
  padding:4px 10px;border-radius:20px;
}
.badge-green{background:rgba(34,197,94,.12);color:var(--green)}
.badge-amber{background:rgba(245,158,11,.12);color:var(--amber)}
.badge-cyan{background:rgba(6,182,212,.12);color:var(--cyan)}
.badge-pink{background:rgba(236,72,153,.12);color:var(--pink)}
.badge-purple{background:rgba(99,102,241,.12);color:var(--accent-2)}

/* ── Animated gradient bg ── */
.hero-glow{
  position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:900px;height:900px;
  background:radial-gradient(circle,rgba(99,102,241,.12) 0%,rgba(6,182,212,.06) 40%,transparent 70%);
  pointer-events:none;z-index:0;
  animation:glow-pulse 8s ease-in-out infinite alternate;
}
@keyframes glow-pulse{
  0%{opacity:.6;transform:translateX(-50%) scale(1)}
  100%{opacity:1;transform:translateX(-50%) scale(1.15)}
}

/* ── Nav ── */
nav{
  position:sticky;top:0;z-index:100;
  background:rgba(10,14,23,.85);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
}
nav .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{font-weight:800;font-size:1.15rem;letter-spacing:-.02em;display:flex;align-items:center;gap:8px;color:var(--text)}
.nav-logo:hover{color:#fff}
.nav-logo svg{width:28px;height:28px}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{color:var(--text-dim);font-size:.875rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:#fff}
.nav-cta{
  background:var(--accent);color:#fff;font-size:.8rem;font-weight:600;
  padding:8px 20px;border-radius:8px;border:none;cursor:pointer;
  transition:background .2s;
}
.nav-cta:hover{background:#4f46e5}

/* ── Hero ── */
.hero{position:relative;padding:100px 0 80px;text-align:center;overflow:hidden}
.hero h1{
  font-size:clamp(2.5rem,6vw,4.5rem);font-weight:900;letter-spacing:-.03em;
  line-height:1.08;margin-bottom:20px;
  background:linear-gradient(135deg,#fff 0%,#c7d2fe 50%,#818cf8 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p{
  max-width:640px;margin:0 auto 36px;font-size:1.15rem;color:var(--text-dim);line-height:1.7;
}
.hero-stats{
  display:flex;justify-content:center;gap:48px;flex-wrap:wrap;
  margin-top:48px;padding-top:48px;border-top:1px solid var(--border);
}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2rem;font-weight:800;font-family:'JetBrains Mono',monospace}
.hero-stat .label{font-size:.78rem;color:var(--text-muted);margin-top:2px;text-transform:uppercase;letter-spacing:.06em}
.hero-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn-primary{
  background:var(--accent);color:#fff;padding:14px 32px;border-radius:10px;
  font-weight:600;font-size:.95rem;border:none;cursor:pointer;transition:all .2s;
  display:inline-block;text-align:center;
}
.btn-primary:hover{background:#4f46e5;transform:translateY(-1px);box-shadow:0 8px 24px rgba(99,102,241,.3);color:#fff}
.btn-secondary{
  background:transparent;color:var(--text);padding:14px 32px;border-radius:10px;
  font-weight:600;font-size:.95rem;border:1px solid var(--border);cursor:pointer;transition:all .2s;
  display:inline-block;text-align:center;
}
.btn-secondary:hover{border-color:var(--accent);color:var(--accent-2)}

/* ── Section headers ── */
section{padding:80px 0}
.section-label{
  font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--accent-2);margin-bottom:8px;
}
.section-title{font-size:clamp(1.6rem,3.5vw,2.4rem);font-weight:800;letter-spacing:-.02em;margin-bottom:12px}
.section-sub{color:var(--text-dim);max-width:560px;font-size:1rem;line-height:1.7}

/* ── Chain comparison table ── */
.table-wrap{
  overflow-x:auto;margin-top:40px;
  border:1px solid var(--border);border-radius:var(--radius);
  background:var(--bg-card);
}
table{width:100%;border-collapse:collapse;min-width:900px}
thead{background:var(--bg-card-2)}
th{
  text-align:left;padding:14px 20px;font-size:.75rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);
  border-bottom:1px solid var(--border);
}
td{padding:16px 20px;border-bottom:1px solid var(--border);font-size:.9rem}
tr:last-child td{border-bottom:none}
tr:hover{background:rgba(99,102,241,.04)}
.chain-name{display:flex;align-items:center;gap:10px;font-weight:600}
.chain-icon{
  width:32px;height:32px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:.85rem;font-weight:700;color:#fff;flex-shrink:0;
}
.apy-cell{font-family:'JetBrains Mono',monospace;font-weight:600;color:var(--green)}
.staked-cell{font-family:'JetBrains Mono',monospace;font-weight:500}
.risk-low{color:var(--green)}
.risk-med{color:var(--amber)}
.risk-high{color:var(--red)}

/* ── Chain detail cards ── */
.chain-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:24px;margin-top:40px}
.chain-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;transition:border-color .3s,transform .3s;
  display:block;color:inherit;
}
.chain-card:hover{border-color:var(--accent);transform:translateY(-3px);color:inherit}
a.chain-card{cursor:pointer}
a.chain-card:hover .chain-card-cta{color:#fff;gap:10px}
.chain-card-header{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.chain-card-icon{
  width:48px;height:48px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;font-weight:800;color:#fff;flex-shrink:0;
}
.chain-card-title{font-size:1.2rem;font-weight:700}
.chain-card-subtitle{font-size:.8rem;color:var(--text-muted)}
.chain-card-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:20px}
.cc-stat-label{font-size:.72rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}
.cc-stat-value{font-size:1.05rem;font-weight:700;font-family:'JetBrains Mono',monospace;margin-top:2px}
.chain-card-body{font-size:.88rem;color:var(--text-dim);line-height:1.7;margin-bottom:20px}
.chain-card-tags{display:flex;flex-wrap:wrap;gap:6px}
.chain-card-cta{
  margin-top:18px;display:inline-flex;align-items:center;gap:6px;
  font-size:.82rem;font-weight:600;color:var(--accent-2);transition:color .2s,gap .2s;
}

/* ── Guide cards ── */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:40px}
.guide-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:border-color .3s;
}
.guide-card:hover{border-color:var(--accent)}
.guide-card-num{
  font-size:.7rem;font-weight:700;color:var(--accent-2);
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px;
}
.guide-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.guide-card p{font-size:.88rem;color:var(--text-dim);line-height:1.65}

/* ── Risk matrix ── */
.risk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin-top:40px}
.risk-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;
}
.risk-card h4{font-size:.95rem;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.risk-card p{font-size:.84rem;color:var(--text-dim);line-height:1.6}
.risk-icon{font-size:1.2rem}

/* ── Glossary ── */
.glossary-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:16px;margin-top:40px}
.glossary-item{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:20px;
}
.glossary-item dt{font-weight:700;font-size:.95rem;margin-bottom:4px}
.glossary-item dd{font-size:.84rem;color:var(--text-dim);line-height:1.6}

/* ── Newsletter ── */
.newsletter{
  background:linear-gradient(135deg,var(--bg-card-2),rgba(99,102,241,.08));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:56px 40px;text-align:center;margin-top:80px;
}
.newsletter h2{font-size:1.6rem;font-weight:800;margin-bottom:8px}
.newsletter p{color:var(--text-dim);margin-bottom:24px}
.newsletter-form{display:flex;gap:10px;max-width:440px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.newsletter-input{
  flex:1;min-width:200px;padding:12px 16px;border-radius:8px;border:1px solid var(--border);
  background:var(--bg);color:var(--text);font-size:.9rem;outline:none;
}
.newsletter-input:focus{border-color:var(--accent)}
.newsletter-btn{
  background:var(--accent);color:#fff;padding:12px 28px;border-radius:8px;
  font-weight:600;font-size:.9rem;border:none;cursor:pointer;transition:background .2s;
}
.newsletter-btn:hover{background:#4f46e5}

/* ── Sortable table headers ── */
th[data-sort]{cursor:pointer;user-select:none;transition:color .2s}
th[data-sort]:hover{color:var(--text)}
th[data-sort]::after{content:' ⇅';opacity:.35;font-size:.85em}
th[aria-sort=ascending]::after{content:' ↑';opacity:1;color:var(--accent-2);font-weight:700}
th[aria-sort=descending]::after{content:' ↓';opacity:1;color:var(--accent-2);font-weight:700}

/* ── Calculator ── */
.calc{
  margin-top:40px;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:32px;
}
.calc-inputs{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:28px}
.calc-field{display:flex;flex-direction:column;gap:6px}
.calc-field>span{
  font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-muted);
}
.calc-field select,.calc-field input{
  padding:12px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);
  background:var(--bg);color:var(--text);font-size:.95rem;font-family:inherit;
  outline:none;transition:border-color .2s;appearance:none;
}
.calc-field input{font-family:'JetBrains Mono',monospace}
.calc-field select:focus,.calc-field input:focus{border-color:var(--accent)}
.calc-outputs{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;
  padding-top:24px;border-top:1px solid var(--border);
}
.calc-out{text-align:center}
.calc-out-label{
  font-size:.72rem;color:var(--text-muted);text-transform:uppercase;
  letter-spacing:.05em;margin-bottom:6px;
}
.calc-out-value{font-size:1.2rem;font-weight:700;font-family:'JetBrains Mono',monospace}
.calc-note{font-size:.78rem;color:var(--text-muted);margin-top:16px;text-align:center}

/* ── Footer ── */
footer{padding:48px 0;border-top:1px solid var(--border);margin-top:40px}
.footer-inner{display:flex;justify-content:space-between;align-items:start;flex-wrap:wrap;gap:40px}
.footer-brand{max-width:300px}
.footer-brand h3{font-weight:800;font-size:1.1rem;margin-bottom:6px}
.footer-brand p{font-size:.82rem;color:var(--text-muted);line-height:1.6}
.footer-links{display:flex;gap:48px;flex-wrap:wrap}
.footer-col h4{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:12px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:var(--text-dim);font-size:.85rem}
.footer-col a:hover{color:#fff}
.footer-bottom{text-align:center;padding-top:32px;margin-top:32px;border-top:1px solid var(--border);font-size:.78rem;color:var(--text-muted)}

/* ── Nakamoto Coefficient ── */
.nak-explain{
  margin-top:32px;display:flex;flex-direction:column;gap:20px;
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;
}
.nak-explain>p{color:var(--text-dim);font-size:.92rem;line-height:1.7}
.nak-explain>p b{color:var(--text)}
.nak-factors{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;
}
.nak-factor{
  display:flex;gap:12px;padding:14px 16px;
  background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);
}
.nak-factor .num{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  background:var(--bg-card-2);color:var(--accent-2);
  display:flex;align-items:center;justify-content:center;
  font-family:'JetBrains Mono',monospace;font-weight:700;font-size:.82rem;
  border:1px solid var(--border);
}
.nak-factor b{font-size:.9rem;display:block;margin-bottom:2px}
.nak-factor span{font-size:.78rem;color:var(--text-dim);line-height:1.5;display:block}
.nak-footnote{font-size:.82rem !important;color:var(--text-muted) !important}
.nak-footnote b{color:var(--text-dim) !important}
.nak-coef{font-family:'JetBrains Mono',monospace;font-weight:700}
.nak-strong{color:var(--green)}
.nak-ok{color:var(--accent-2)}
.nak-weak{color:var(--amber)}
.nak-poor{color:var(--red)}
.nak-na{color:var(--text-muted)}
.nak-table-note{font-size:.78rem;color:var(--text-muted);margin-top:12px}
#nak-table{min-width:640px}
#nak-table td:first-child{color:var(--text-muted);font-family:'JetBrains Mono',monospace;font-size:.82rem;width:48px}

/* ── Responsive ── */
@media(max-width:768px){
  .hero-stats{gap:24px}
  .hero-stat .num{font-size:1.5rem}
  .nav-links{display:none}
  .chain-grid,.guide-grid,.risk-grid,.glossary-grid{grid-template-columns:1fr}
  .calc-inputs{grid-template-columns:1fr}
  .footer-inner{flex-direction:column}
  section{padding:56px 0}
}