/* Google Fonts — Poppins + DM Sans */
    :root{--bg-base:#080c18;--bg-surface:#0f1628;--bg-card:#141d35;--bg-card-hover:#1a2540;--bg-input:#1e2a45;--text-primary:#f0f4ff;--text-secondary:#8fa3cc;--text-muted:#6b82a8;--accent:#00d4aa;--accent-dim:#00a882;--accent-glow:rgba(0,212,170,0.15);--amber:#f59e0b;--border:rgba(255,255,255,0.07);--border-accent:rgba(0,212,170,0.3);--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--font-display:'Poppins','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;--font-body:'DM Sans','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;--nav-h:64px;--callout-blue-bg:rgba(30,80,180,0.15);--callout-blue-border:rgba(60,130,255,0.4);--callout-green-bg:rgba(20,120,60,0.15);--callout-green-border:rgba(0,200,100,0.4);--callout-amber-bg:rgba(140,90,0,0.15);--callout-amber-border:rgba(245,158,11,0.5);--callout-red-bg:rgba(140,20,20,0.15);--callout-red-border:rgba(239,68,68,0.4);}
    *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
    html{scroll-behavior:smooth;}
    body{font-family:var(--font-body);background:var(--bg-base);color:var(--text-primary);font-size:16px;line-height:1.75;overflow-x:hidden;}
    a{color:var(--accent);text-decoration:none;}a:hover{text-decoration:underline;}
    ul,ol{padding-left:1.5rem;}
    h1,h2,h3,h4{font-family:var(--font-display);line-height:1.25;color:var(--text-primary);}
    h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;}
    h2{font-size:clamp(1.2rem,2.5vw,1.6rem);font-weight:700;margin:36px 0 14px;}
    h3{font-size:1.05rem;font-weight:600;margin:24px 0 10px;}
    p{color:var(--text-secondary);margin-bottom:1rem;}p:last-child{margin-bottom:0;}
    .nav{position:sticky;top:0;z-index:100;height:var(--nav-h);background:rgba(8,12,24,0.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);display:flex;align-items:center;}
    .nav__inner{display:flex;align-items:center;gap:24px;width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
    .nav__logo{font-family:var(--font-display);font-weight:800;font-size:1.25rem;color:var(--text-primary);display:flex;align-items:center;gap:8px;text-decoration:none;}
    .nav__logo:hover{text-decoration:none;}
    .nav__logo-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent);display:inline-block;}
    .nav__search{flex:1;max-width:380px;position:relative;}
    .nav__search input{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:8px;padding:8px 16px 8px 40px;color:var(--text-primary);font-family:var(--font-body);font-size:0.9rem;outline:none;}
    .nav__search input::placeholder{color:var(--text-muted);}
    .nav__search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none;}
    .nav__links{display:flex;align-items:center;gap:4px;margin-left:auto;list-style:none;padding:0;}
    .nav__links a{padding:6px 12px;border-radius:var(--radius-sm);font-size:0.9rem;color:var(--text-secondary);transition:color 0.2s,background 0.2s;}
    .nav__links a:hover{color:var(--text-primary);background:var(--bg-card);text-decoration:none;}
    .nav__hamburger{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px;align-items:center;}
    .nav__hamburger span{display:block;width:22px;height:2px;background:var(--text-primary);border-radius:2px;}
    .nav__drawer{display:none;position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;background:var(--bg-surface);z-index:99;overflow-y:auto;padding:24px 20px;flex-direction:column;gap:8px;}
    .nav__drawer.open{display:flex;}
    .nav__drawer a{padding:12px 16px;border-radius:var(--radius-sm);font-size:1rem;color:var(--text-secondary);border:1px solid var(--border);}
    .nav__drawer a:hover{color:var(--text-primary);background:var(--bg-card);text-decoration:none;}
    .page-layout{display:grid;grid-template-columns:1fr 300px;gap:48px;padding:40px 20px;max-width:1200px;margin:0 auto;}
    .page-main{min-width:0;}
    .breadcrumb{font-size:0.8rem;color:var(--text-muted);margin-bottom:16px;display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
    .breadcrumb a{color:var(--text-muted);}
    .breadcrumb a:hover{color:var(--accent);}
    .coin-symbol-block{display:flex;align-items:center;gap:16px;margin-bottom:16px;}
    .coin-symbol-circle{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#f0b90b,#f8931a);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:1rem;color:#fff;flex-shrink:0;}
    .coin-ticker{font-size:0.8rem;color:var(--text-muted);font-weight:600;letter-spacing:0.08em;}
    .tag{display:inline-block;padding:3px 10px;border-radius:20px;font-size:0.72rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;}
    .tag--layer1{background:rgba(0,212,170,0.15);color:var(--accent);}
    .tag--exchange{background:rgba(240,185,11,0.15);color:#f0b90b;}
    .tags-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;}
    .last-verified{display:inline-flex;align-items:center;gap:6px;font-size:0.78rem;color:var(--text-muted);background:var(--bg-card);border:1px solid var(--border);border-radius:20px;padding:4px 12px;margin-bottom:20px;}
    .last-verified::before{content:'✓';color:var(--accent);font-weight:700;}
    .disclaimer-layer2{background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.25);border-radius:var(--radius-md);padding:16px 20px;font-size:0.85rem;color:#d4a94a;margin:20px 0;line-height:1.6;}
    .callout{border-radius:var(--radius-md);padding:16px 20px;margin:24px 0;font-size:0.95rem;}
    .callout-label{font-size:0.7rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;margin-bottom:6px;display:block;}
    .callout-blue{background:var(--callout-blue-bg);border-left:3px solid var(--callout-blue-border);}
    .callout-blue .callout-label{color:#6ba3ff;}
    .callout-blue p{color:var(--text-primary);margin:0;}
    .callout-green{background:var(--callout-green-bg);border-left:3px solid var(--callout-green-border);}
    .callout-green .callout-label{color:#4ade80;}
    .callout-green p{color:var(--text-secondary);margin:0;}
    .callout-amber{background:var(--callout-amber-bg);border-left:3px solid var(--callout-amber-border);}
    .callout-amber .callout-label{color:var(--amber);}
    .callout-amber p{color:var(--text-secondary);margin:0;}
    .callout-red{background:var(--callout-red-bg);border-left:3px solid var(--callout-red-border);}
    .callout-red .callout-label{color:#f87171;}
    .callout-red p{color:var(--text-secondary);margin:0;}
    .tabs{margin:32px 0 0;}
    .tabs__nav{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:32px;overflow-x:auto;}
    .tabs__btn{padding:10px 20px;border-radius:var(--radius-sm) var(--radius-sm) 0 0;border:none;background:none;cursor:pointer;font-family:var(--font-body);font-size:0.9rem;font-weight:600;color:var(--text-muted);transition:all 0.2s;position:relative;bottom:-1px;border:1px solid transparent;border-bottom:none;white-space:nowrap;}
    .tabs__btn:hover{color:var(--text-secondary);}
    .tabs__btn.active{color:var(--text-primary);background:var(--bg-base);border-color:var(--border);border-bottom-color:var(--bg-base);}
    .tabs__btn.active.tab-curious{color:var(--accent);}
    .tabs__btn.active.tab-exploring{color:var(--amber);}
    .tabs__btn.active.tab-deep{color:#a78bfa;}
    .tabs__panel{display:none;}
    .tabs__panel.active{display:block;}
    .content-section h2{font-size:1.3rem;margin:32px 0 14px;padding-top:8px;border-top:1px solid var(--border);}
    .content-section h2:first-child{border-top:none;margin-top:0;}
    .content-section h3{font-size:1.05rem;margin:24px 0 10px;}
    .content-section p{font-size:0.95rem;line-height:1.85;margin-bottom:14px;}
    .content-section ul{margin-bottom:16px;}
    .content-section li{font-size:0.95rem;color:var(--text-secondary);margin-bottom:6px;line-height:1.7;}
    .source-cite{font-size:0.78rem;color:var(--text-muted);font-style:italic;margin-top:4px;}
    .source-cite a{color:var(--text-muted);text-decoration:underline;}
    .source-cite a:hover{color:var(--accent);}
    .sidebar-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px;margin-bottom:20px;}
    .sidebar-card h4{font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.08em;color:var(--text-muted);margin-bottom:14px;}
    .sidebar-row{display:flex;justify-content:space-between;align-items:center;padding:7px 0;border-bottom:1px solid var(--border);font-size:0.85rem;}
    .sidebar-row:last-child{border-bottom:none;}
    .sidebar-row__label{color:var(--text-muted);}
    .sidebar-row__val{color:var(--text-primary);font-weight:500;text-align:right;}
    .sidebar-card ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:6px;}
    .sidebar-card ul a{font-size:0.875rem;color:var(--text-secondary);display:block;padding:4px 0;}
    .sidebar-card ul a:hover{color:var(--accent);text-decoration:none;}
    .external-link::after{content:' ↗';font-size:0.7em;opacity:0.6;}
    .related-strip{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0;}
    .related-pill{padding:8px 16px;border-radius:20px;background:var(--bg-card);border:1px solid var(--border);font-size:0.85rem;color:var(--text-secondary);transition:all 0.2s;}
    .related-pill:hover{border-color:var(--border-accent);color:var(--accent);text-decoration:none;}
    .section-label{font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.12em;color:var(--accent);margin-bottom:12px;display:flex;align-items:center;gap:8px;}
    .section-label::after{content:'';flex:1;height:1px;background:linear-gradient(to right,var(--border-accent),transparent);}
    .footer{background:var(--bg-surface);border-top:1px solid var(--border);margin-top:80px;padding:60px 0 40px;}
    .footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
    .footer__brand p{font-size:0.875rem;margin-top:12px;}
    .footer__col h4{font-size:0.8rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:16px;}
    .footer__col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px;}
    .footer__col ul a{font-size:0.875rem;color:var(--text-secondary);}
    .footer__col ul a:hover{color:var(--accent);text-decoration:none;}
    .footer__disclaimer{border-top:1px solid var(--border);padding-top:24px;font-size:0.8rem;color:var(--text-muted);line-height:1.6;}
    .footer__disclaimer a{color:var(--text-muted);text-decoration:underline;}
    @media(max-width:900px){.page-layout{grid-template-columns:1fr;}.page-sidebar{display:none;}.footer__grid{grid-template-columns:1fr 1fr;}}
    @media(max-width:640px){.nav__links{display:none;}.nav__search{display:none;}.nav__hamburger{display:flex;margin-left:auto;}.footer__grid{grid-template-columns:1fr;}.tabs__btn{padding:8px 12px;font-size:0.82rem;}}
  
    /* Pending (unbuilt) links — honest about status */
    a[data-status="pending"]{opacity:0.6;cursor:default;}
    a[data-status="pending"]::after{content:' ↗';font-size:0.65em;opacity:0.5;}

  
    /* Option B: stacked reading levels (replaces tabs) */
    .tabs__panel{display:block !important;}
    .stack-section{display:block;margin:0 0 8px;padding-top:8px;scroll-margin-top:80px;}
    .stack-section__head{margin:36px 0 18px;padding:14px 16px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,0.02);}
    .stack-section--curious .stack-section__head{border-left:3px solid #34d399;}
    .stack-section--exploring .stack-section__head{border-left:3px solid #fbbf24;}
    .stack-section--deep .stack-section__head{border-left:3px solid #a78bfa;}
    .stack-section__title{font-size:1.15rem !important;margin:0 0 2px !important;}
    .stack-section__sub{font-size:0.85rem;color:var(--text-muted);margin:0 !important;}
    .readguide{background:rgba(0,212,170,0.06);border:1px solid rgba(0,212,170,0.2);border-radius:12px;padding:16px 18px;margin-bottom:28px;}
    .readguide__intro{font-size:0.92rem;color:var(--text-secondary);margin:0 0 12px;}
    .readguide__intro strong{color:var(--accent);}
    .readguide__links{display:flex;flex-wrap:wrap;gap:8px;}
    .readguide__link{font-size:0.85rem;font-weight:600;padding:7px 14px;border-radius:999px;border:1px solid var(--border);color:var(--text-secondary);background:rgba(255,255,255,0.02);white-space:nowrap;}
    .readguide__link:hover{text-decoration:none;border-color:var(--accent);color:var(--text-primary);}
    html{scroll-behavior:smooth;}
    /* Client-side search dropdown (GitBook-style) */
    .cc-search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:1000;max-height:70vh;overflow-y:auto;background:#0f1628;border:1px solid rgba(255,255,255,0.12);border-radius:14px;box-shadow:0 20px 60px rgba(0,0,0,0.6);padding:6px;min-width:280px;}
    .cc-search-head{display:flex;align-items:center;justify-content:space-between;padding:8px 12px 6px;font-size:0.7rem;font-weight:600;text-transform:uppercase;letter-spacing:0.06em;color:#5a6f96;border-bottom:1px solid rgba(255,255,255,0.06);margin-bottom:4px;}
    .cc-search-hint{font-weight:500;text-transform:none;letter-spacing:0;color:#6b82a8;}
    .cc-search-item{display:block;padding:10px 12px;border-radius:9px;text-decoration:none;cursor:pointer;border:1px solid transparent;}
    .cc-search-item.is-active,.cc-search-item:hover{background:rgba(0,212,170,0.12);border-color:rgba(0,212,170,0.35);text-decoration:none;}
    .cc-search-cat{display:inline-block;font-size:0.62rem;font-weight:700;text-transform:uppercase;letter-spacing:0.07em;color:#00d4aa;background:rgba(0,212,170,0.12);padding:2px 8px;border-radius:999px;margin-bottom:5px;}
    .cc-search-title{display:block;font-size:0.95rem;font-weight:600;color:#f0f4ff;line-height:1.3;}
    .cc-search-excerpt{display:-webkit-box;font-size:0.8rem;color:#8fa3cc;line-height:1.45;margin-top:3px;overflow:hidden;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
    .cc-mark{background:rgba(0,212,170,0.28);color:#bff7ea;border-radius:3px;padding:0 1px;}
    .cc-search-empty{padding:16px 14px;font-size:0.88rem;color:#c7d3ea;}
    .cc-search-empty-sub{display:block;font-size:0.78rem;color:#5a6f96;margin-top:6px;line-height:1.5;}


    .drawer__search{position:relative;padding:4px 4px 10px;margin-bottom:6px;border-bottom:1px solid rgba(255,255,255,0.08);}
    .drawer__search input{width:100%;box-sizing:border-box;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:10px;padding:11px 14px;color:#f0f4ff;font-size:0.95rem;font-family:inherit;outline:none;}
    .drawer__search input:focus{border-color:#00d4aa;}
    .drawer__search input::placeholder{color:#5a6f96;}

    .drawer__search .cc-search-results{position:static;margin-top:8px;max-height:none;box-shadow:none;}

    .skip-link{position:absolute;left:-9999px;top:8px;z-index:10000;background:#00d4aa;color:#080c18;padding:10px 18px;border-radius:8px;font-weight:700;text-decoration:none;font-size:0.9rem;}
    .skip-link:focus{left:8px;}

    :focus-visible{outline:2px solid #00d4aa;outline-offset:2px;border-radius:2px;}
    input:focus-visible,select:focus-visible{outline:2px solid #00d4aa;outline-offset:1px;}